28164073880 has 16 divisors (see below), whose sum is σ = 63369166320. Its totient is φ = 11265629536.

The previous prime is 28164073843. The next prime is 28164073897. The reversal of 28164073880 is 8837046182.

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, 352050884 + ... + 352050963.

It is an arithmetic number, because the mean of its divisors is an integer number (3960572895).

Almost surely, 2^28164073880 is an apocalyptic number.

28164073880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28164073880 is an abundant number, since it is smaller than the sum of its proper divisors (35205092440).

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

28164073880 is a wasteful number, since it uses less digits than its factorization.

28164073880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704101858 (or 704101854 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 47.

The spelling of 28164073880 in words is "twenty-eight billion, one hundred sixty-four million, seventy-three thousand, eight hundred eighty".