20796538 has 32 divisors (see below), whose sum is σ = 37215360. Its totient is φ = 8527680.

The previous prime is 20796527. The next prime is 20796551. The reversal of 20796538 is 83569702.

It is a self number, because there is not a number n which added to its sum of digits gives 20796538.

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, 73345 + ... + 73627.

It is an arithmetic number, because the mean of its divisors is an integer number (1162980).

Almost surely, 2^20796538 is an apocalyptic number.

20796538 is a deficient number, since it is larger than the sum of its proper divisors (16418822).

20796538 is a wasteful number, since it uses less digits than its factorization.

20796538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 20796538 is about 4560.3221377442. The cubic root of 20796538 is about 274.9985145925.

The spelling of 20796538 in words is "twenty million, seven hundred ninety-six thousand, five hundred thirty-eight".