28613890288 has 20 divisors (see below), whose sum is σ = 57351117240. Its totient is φ = 13813601984.

The previous prime is 28613890267. The next prime is 28613890303. The reversal of 28613890288 is 88209831682.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30833470 + ... + 30834397.

It is an arithmetic number, because the mean of its divisors is an integer number (2867555862).

Almost surely, 2^28613890288 is an apocalyptic number.

It is an amenable number.

28613890288 is an abundant number, since it is smaller than the sum of its proper divisors (28737226952).

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

28613890288 is a wasteful number, since it uses less digits than its factorization.

28613890288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61667904 (or 61667898 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 55.

The spelling of 28613890288 in words is "twenty-eight billion, six hundred thirteen million, eight hundred ninety thousand, two hundred eighty-eight".