232320400440 has 64 divisors (see below), whose sum is σ = 698781081600. Its totient is φ = 61790339712.

The previous prime is 232320400409. The next prime is 232320400457. The reversal of 232320400440 is 44004023232.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 232320400440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2481460 + ... + 2573379.

It is an arithmetic number, because the mean of its divisors is an integer number (10918454400).

Almost surely, 2^232320400440 is an apocalyptic number.

232320400440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

232320400440 is an abundant number, since it is smaller than the sum of its proper divisors (466460681160).

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

232320400440 is a wasteful number, since it uses less digits than its factorization.

232320400440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5055236 (or 5055232 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 232320400440 its reverse (44004023232), we get a palindrome (276324423672).

The spelling of 232320400440 in words is "two hundred thirty-two billion, three hundred twenty million, four hundred thousand, four hundred forty".