28307556432700 has 72 divisors (see below), whose sum is σ = 63727565619200. Its totient is φ = 10902699403200.

The previous prime is 28307556432679. The next prime is 28307556432811. The reversal of 28307556432700 is 723465570382.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22326492 + ... + 23560291.

Almost surely, 2^{28307556432700} is an apocalyptic number.

28307556432700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28307556432700 is an abundant number, since it is smaller than the sum of its proper divisors (35420009186500).

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

28307556432700 is a wasteful number, since it uses less digits than its factorization.

28307556432700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45887027 (or 45887020 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 52.

The spelling of 28307556432700 in words is "twenty-eight trillion, three hundred seven billion, five hundred fifty-six million, four hundred thirty-two thousand, seven hundred".