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213027040 = 25529311481
BaseRepresentation
bin11001011001010…
…00100011100000
3112211211220011101
430230220203200
5414013331130
633045524144
75164462042
oct1454504340
9484756141
10213027040
11aa280406
125b413654
1335198905
1420413a92
1513a7e1ca
hexcb288e0

213027040 has 96 divisors (see below), whose sum is σ = 537788160. Its totient is φ = 79564800.

The previous prime is 213027029. The next prime is 213027047. The reversal of 213027040 is 40720312.

It is a junction number, because it is equal to n+sod(n) for n = 213026999 and 213027017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213027047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143100 + ... + 144580.

It is an arithmetic number, because the mean of its divisors is an integer number (5601960).

Almost surely, 2213027040 is an apocalyptic number.

213027040 is a gapful number since it is divisible by the number (20) 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 213027040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268894080).

213027040 is an abundant number, since it is smaller than the sum of its proper divisors (324761120).

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

213027040 is a wasteful number, since it uses less digits than its factorization.

213027040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1556 (or 1548 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 213027040 is about 14595.4458650635. The cubic root of 213027040 is about 597.2345324915.

Adding to 213027040 its reverse (40720312), we get a palindrome (253747352).

The spelling of 213027040 in words is "two hundred thirteen million, twenty-seven thousand, forty".

Divisors: 1 2 4 5 8 10 16 20 29 31 32 40 58 62 80 116 124 145 155 160 232 248 290 310 464 496 580 620 899 928 992 1160 1240 1481 1798 2320 2480 2962 3596 4495 4640 4960 5924 7192 7405 8990 11848 14384 14810 17980 23696 28768 29620 35960 42949 45911 47392 59240 71920 85898 91822 118480 143840 171796 183644 214745 229555 236960 343592 367288 429490 459110 687184 734576 858980 918220 1331419 1374368 1469152 1717960 1836440 2662838 3435920 3672880 5325676 6657095 6871840 7345760 10651352 13314190 21302704 26628380 42605408 53256760 106513520 213027040