28032647860 has 48 divisors (see below), whose sum is σ = 67312715904. Its totient is φ = 9606284928.

The previous prime is 28032647833. The next prime is 28032647873. The reversal of 28032647860 is 6874623082.

It is a self number, because there is not a number n which added to its sum of digits gives 28032647860.

It is a congruent number.

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, 229447 + ... + 329713.

It is an arithmetic number, because the mean of its divisors is an integer number (1402348248).

Almost surely, 2^28032647860 is an apocalyptic number.

28032647860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28032647860 is an abundant number, since it is smaller than the sum of its proper divisors (39280068044).

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

28032647860 is a wasteful number, since it uses less digits than its factorization.

28032647860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102280 (or 102278 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 46.

The spelling of 28032647860 in words is "twenty-eight billion, thirty-two million, six hundred forty-seven thousand, eight hundred sixty".