20996732 has 6 divisors (see below), whose sum is σ = 36744288. Its totient is φ = 10498364.

The previous prime is 20996719. The next prime is 20996741. The reversal of 20996732 is 23769902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2624588 + ... + 2624595.

It is an arithmetic number, because the mean of its divisors is an integer number (6124048).

Almost surely, 2^20996732 is an apocalyptic number.

It is an amenable number.

20996732 is a deficient number, since it is larger than the sum of its proper divisors (15747556).

20996732 is a wasteful number, since it uses less digits than its factorization.

20996732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5249187 (or 5249185 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 20996732 is about 4582.2191130499. The cubic root of 20996732 is about 275.8781055239.

The spelling of 20996732 in words is "twenty million, nine hundred ninety-six thousand, seven hundred thirty-two".