28646836044 has 48 divisors (see below), whose sum is σ = 69616141056. Its totient is φ = 9159998400.

The previous prime is 28646836033. The next prime is 28646836067. The reversal of 28646836044 is 44063864682.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 422842 + ... + 485889.

It is an arithmetic number, because the mean of its divisors is an integer number (1450336272).

Almost surely, 2^28646836044 is an apocalyptic number.

It is an amenable number.

28646836044 is an abundant number, since it is smaller than the sum of its proper divisors (40969305012).

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

28646836044 is a wasteful number, since it uses less digits than its factorization.

28646836044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908846 (or 908844 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 51.

The spelling of 28646836044 in words is "twenty-eight billion, six hundred forty-six million, eight hundred thirty-six thousand, forty-four".