28288865590 has 16 divisors (see below), whose sum is σ = 51291639072. Its totient is φ = 11232950464.

The previous prime is 28288865587. The next prime is 28288865621. The reversal of 28288865590 is 9556888282.

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, 10323034 + ... + 10325773.

It is an arithmetic number, because the mean of its divisors is an integer number (3205727442).

Almost surely, 2^28288865590 is an apocalyptic number.

28288865590 is a deficient number, since it is larger than the sum of its proper divisors (23002773482).

28288865590 is a wasteful number, since it uses less digits than its factorization.

28288865590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20648951.

The product of its (nonzero) digits is 22118400, while the sum is 61.

The spelling of 28288865590 in words is "twenty-eight billion, two hundred eighty-eight million, eight hundred sixty-five thousand, five hundred ninety".