428731199232 has 72 divisors (see below), whose sum is σ = 1304057414016. Its totient is φ = 122494626816.

The previous prime is 428731199227. The next prime is 428731199249. The reversal of 428731199232 is 232991137824.

428731199232 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39869178 + ... + 39879929.

It is an arithmetic number, because the mean of its divisors is an integer number (18111908528).

Almost surely, 2^428731199232 is an apocalyptic number.

428731199232 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

428731199232 is an abundant number, since it is smaller than the sum of its proper divisors (875326214784).

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

428731199232 is an equidigital number, since it uses as much as digits as its factorization.

428731199232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79749133 (or 79749119 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 51.

The spelling of 428731199232 in words is "four hundred twenty-eight billion, seven hundred thirty-one million, one hundred ninety-nine thousand, two hundred thirty-two".