232187928 has 64 divisors (see below), whose sum is σ = 667695360. Its totient is φ = 65909376.

The previous prime is 232187927. The next prime is 232187933. The reversal of 232187928 is 829781232.

It is a happy number.

232187928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×232187928² = 107822467817866368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 232187928.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232187927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21975 + ... + 30777.

It is an arithmetic number, because the mean of its divisors is an integer number (10432740).

Almost surely, 2^232187928 is an apocalyptic number.

232187928 is a gapful number since it is divisible by the number (28) 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 232187928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333847680).

232187928 is an abundant number, since it is smaller than the sum of its proper divisors (435507432).

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

232187928 is a wasteful number, since it uses less digits than its factorization.

232187928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8976 (or 8972 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 232187928 is about 15237.7140017786. The cubic root of 232187928 is about 614.6292325305.

The spelling of 232187928 in words is "two hundred thirty-two million, one hundred eighty-seven thousand, nine hundred twenty-eight".