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230084640 = 25325236947
BaseRepresentation
bin11011011011011…
…01000000100000
3121000221111210100
431231231000200
5432400202030
634455302400
75462454462
oct1555550040
9530844710
10230084640
11108970aa5
126507aa00
133888b976
14227b4132
15152ed360
hexdb6d020

230084640 has 144 divisors (see below), whose sum is σ = 819419328. Its totient is φ = 58679808.

The previous prime is 230084597. The next prime is 230084653. The reversal of 230084640 is 46480032.

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

It is a super-3 number, since 3×2300846403 (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29647 + ... + 36593.

It is an arithmetic number, because the mean of its divisors is an integer number (5690412).

Almost surely, 2230084640 is an apocalyptic number.

230084640 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 230084640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409709664).

230084640 is an abundant number, since it is smaller than the sum of its proper divisors (589334688).

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

230084640 is a wasteful number, since it uses less digits than its factorization.

230084640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6991 (or 6980 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 230084640 is about 15168.5411295879. The cubic root of 230084640 is about 612.7677152604.

Subtracting from 230084640 its product of nonzero digits (4608), we obtain a palindrome (230080032).

The spelling of 230084640 in words is "two hundred thirty million, eighty-four thousand, six hundred forty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 23 24 30 32 36 40 45 46 48 60 69 72 80 90 92 96 115 120 138 144 160 180 184 207 230 240 276 288 345 360 368 414 460 480 552 690 720 736 828 920 1035 1104 1380 1440 1656 1840 2070 2208 2760 3312 3680 4140 5520 6624 6947 8280 11040 13894 16560 20841 27788 33120 34735 41682 55576 62523 69470 83364 104205 111152 125046 138940 159781 166728 208410 222304 250092 277880 312615 319562 333456 416820 479343 500184 555760 625230 639124 666912 798905 833640 958686 1000368 1111520 1250460 1278248 1438029 1597810 1667280 1917372 2000736 2396715 2500920 2556496 2876058 3195620 3334560 3834744 4793430 5001840 5112992 5752116 6391240 7190145 7669488 9586860 10003680 11504232 12782480 14380290 15338976 19173720 23008464 25564960 28760580 38347440 46016928 57521160 76694880 115042320 230084640