20932728 has 32 divisors (see below), whose sum is σ = 53222400. Its totient is φ = 6858848.

The previous prime is 20932679. The next prime is 20932753. The reversal of 20932728 is 82723902.

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, 5976 + ... + 8807.

It is an arithmetic number, because the mean of its divisors is an integer number (1663200).

Almost surely, 2^20932728 is an apocalyptic number.

It is an amenable number.

20932728 is an abundant number, since it is smaller than the sum of its proper divisors (32289672).

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

20932728 is a wasteful number, since it uses less digits than its factorization.

20932728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14851 (or 14847 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 20932728 is about 4575.2298302927. The cubic root of 20932728 is about 275.5975019487.

The spelling of 20932728 in words is "twenty million, nine hundred thirty-two thousand, seven hundred twenty-eight".