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240725664 = 25323159457
BaseRepresentation
bin11100101100100…
…10111010100000
3121202222010112100
432112102322200
5443111210124
635515330400
75652064044
oct1626227240
9552863470
10240725664
11113979833
1268750a00
133ab4622a
1423d84024
15162011c9
hexe592ea0

240725664 has 144 divisors (see below), whose sum is σ = 720195840. Its totient is φ = 76170240.

The previous prime is 240725651. The next prime is 240725669. The reversal of 240725664 is 466527042.

240725664 is a `hidden beast` number, since 24 + 0 + 72 + 566 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (240725669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 526524 + ... + 526980.

It is an arithmetic number, because the mean of its divisors is an integer number (5001360).

Almost surely, 2240725664 is an apocalyptic number.

240725664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 240725664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (360097920).

240725664 is an abundant number, since it is smaller than the sum of its proper divisors (479470176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

240725664 is a wasteful number, since it uses less digits than its factorization.

240725664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563 (or 552 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 240725664 is about 15515.3364127240. The cubic root of 240725664 is about 622.0722062003.

It can be divided in two parts, 240 and 725664, that added together give a square (725904 = 8522).

The spelling of 240725664 in words is "two hundred forty million, seven hundred twenty-five thousand, six hundred sixty-four".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 31 32 36 48 59 62 72 93 96 118 124 144 177 186 236 248 279 288 354 372 457 472 496 531 558 708 744 914 944 992 1062 1116 1371 1416 1488 1828 1829 1888 2124 2232 2742 2832 2976 3656 3658 4113 4248 4464 5484 5487 5664 7312 7316 8226 8496 8928 10968 10974 14167 14624 14632 16452 16461 16992 21936 21948 26963 28334 29264 32904 32922 42501 43872 43896 53926 56668 58528 65808 65844 80889 85002 87792 107852 113336 127503 131616 131688 161778 170004 175584 215704 226672 242667 255006 263376 323556 340008 431408 453344 485334 510012 526752 647112 680016 835853 862816 970668 1020024 1294224 1360032 1671706 1941336 2040048 2507559 2588448 3343412 3882672 4080096 5015118 6686824 7522677 7765344 10030236 13373648 15045354 20060472 26747296 30090708 40120944 60181416 80241888 120362832 240725664