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231255552 = 2931113687
BaseRepresentation
bin11011100100010…
…10111000000000
3121010010222222110
431302022320000
5433200134202
634540335320
75505432303
oct1562127000
9533128873
10231255552
111095a07a0
1265544540
1338bab908
14229dab3a
151548026c
hexdc8ae00

231255552 has 80 divisors (see below), whose sum is σ = 672135552. Its totient is φ = 70072320.

The previous prime is 231255533. The next prime is 231255601. The reversal of 231255552 is 255552132.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10053 + ... + 23739.

Almost surely, 2231255552 is an apocalyptic number.

231255552 is a gapful number since it is divisible by the number (22) 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 231255552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336067776).

231255552 is an abundant number, since it is smaller than the sum of its proper divisors (440880000).

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

231255552 is a wasteful number, since it uses less digits than its factorization.

231255552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13719 (or 13703 counting only the distinct ones).

The product of its digits is 15000, while the sum is 30.

The square root of 231255552 is about 15207.0888732854. The cubic root of 231255552 is about 613.8054252304.

The spelling of 231255552 in words is "two hundred thirty-one million, two hundred fifty-five thousand, five hundred fifty-two".

Divisors: 1 2 3 4 6 8 11 12 16 22 24 32 33 44 48 64 66 88 96 128 132 176 192 256 264 352 384 512 528 704 768 1056 1408 1536 2112 2816 4224 5632 8448 13687 16896 27374 41061 54748 82122 109496 150557 164244 218992 301114 328488 437984 451671 602228 656976 875968 903342 1204456 1313952 1751936 1806684 2408912 2627904 3503872 3613368 4817824 5255808 7007744 7226736 9635648 10511616 14453472 19271296 21023232 28906944 38542592 57813888 77085184 115627776 231255552