232520440 has 32 divisors (see below), whose sum is σ = 528259680. Its totient is φ = 92103552.

The previous prime is 232520437. The next prime is 232520447. The reversal of 232520440 is 44025232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232520447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24099 + ... + 32338.

It is an arithmetic number, because the mean of its divisors is an integer number (16508115).

Almost surely, 2^232520440 is an apocalyptic number.

232520440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

232520440 is an abundant number, since it is smaller than the sum of its proper divisors (295739240).

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

232520440 is a wasteful number, since it uses less digits than its factorization.

232520440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56551 (or 56547 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 232520440 is about 15248.6209212506. The cubic root of 232520440 is about 614.9224922702.

Adding to 232520440 its reverse (44025232), we get a palindrome (276545672).

The spelling of 232520440 in words is "two hundred thirty-two million, five hundred twenty thousand, four hundred forty".