232157664 has 60 divisors (see below), whose sum is σ = 682776864. Its totient is φ = 77385024.

The previous prime is 232157663. The next prime is 232157689. The reversal of 232157664 is 466751232.

232157664 is a `hidden beast` number, since 2 + 3 + 21 + 576 + 64 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232157663) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 42192 + ... + 47375.

Almost surely, 2^232157664 is an apocalyptic number.

232157664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

232157664 is an abundant number, since it is smaller than the sum of its proper divisors (450619200).

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

232157664 is an equidigital number, since it uses as much as digits as its factorization.

232157664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89589 (or 89572 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 232157664 is about 15236.7209070718. The cubic root of 232157664 is about 614.6025272269.

The spelling of 232157664 in words is "two hundred thirty-two million, one hundred fifty-seven thousand, six hundred sixty-four".