28508695432 has 64 divisors (see below), whose sum is σ = 61416714240. Its totient is φ = 12152832000.

The previous prime is 28508695409. The next prime is 28508695433. The reversal of 28508695432 is 23459680582.

It is a self number, because there is not a number n which added to its sum of digits gives 28508695432.

It is not an unprimeable number, because it can be changed into a prime (28508695433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16564332 + ... + 16566052.

It is an arithmetic number, because the mean of its divisors is an integer number (959636160).

Almost surely, 2^28508695432 is an apocalyptic number.

It is an amenable number.

28508695432 is an abundant number, since it is smaller than the sum of its proper divisors (32908018808).

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

28508695432 is a wasteful number, since it uses less digits than its factorization.

28508695432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3142 (or 3138 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 52.

The spelling of 28508695432 in words is "twenty-eight billion, five hundred eight million, six hundred ninety-five thousand, four hundred thirty-two".