28431432192 has 80 divisors (see below), whose sum is σ = 79729673760. Its totient is φ = 8978337792.

The previous prime is 28431432187. The next prime is 28431432209. The reversal of 28431432192 is 29123413482.

It is a self number, because there is not a number n which added to its sum of digits gives 28431432192.

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, 457923 + ... + 516290.

It is an arithmetic number, because the mean of its divisors is an integer number (996620922).

Almost surely, 2^28431432192 is an apocalyptic number.

It is an amenable number.

28431432192 is an abundant number, since it is smaller than the sum of its proper divisors (51298241568).

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

28431432192 is an equidigital number, since it uses as much as digits as its factorization.

28431432192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974253 (or 974237 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The spelling of 28431432192 in words is "twenty-eight billion, four hundred thirty-one million, four hundred thirty-two thousand, one hundred ninety-two".