20628932 has 12 divisors (see below), whose sum is σ = 36301356. Its totient is φ = 10257120.

The previous prime is 20628929. The next prime is 20628977. The reversal of 20628932 is 23982602.

It can be written as a sum of positive squares in 2 ways, for example, as 4096576 + 16532356 = 2024^2 + 4066^2 .

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, 13523 + ... + 14970.

It is an arithmetic number, because the mean of its divisors is an integer number (3025113).

Almost surely, 2^20628932 is an apocalyptic number.

It is an amenable number.

20628932 is a deficient number, since it is larger than the sum of its proper divisors (15672424).

20628932 is a wasteful number, since it uses less digits than its factorization.

20628932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28678 (or 28676 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 20628932 is about 4541.9084094684. The cubic root of 20628932 is about 274.2577537946.

The spelling of 20628932 in words is "twenty million, six hundred twenty-eight thousand, nine hundred thirty-two".