20972496 has 40 divisors (see below), whose sum is σ = 54343744. Its totient is φ = 6969600.

The previous prime is 20972473. The next prime is 20972513. The reversal of 20972496 is 69427902.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28485 + ... + 29211.

Almost surely, 2^20972496 is an apocalyptic number.

It is an amenable number.

20972496 is an abundant number, since it is smaller than the sum of its proper divisors (33371248).

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

20972496 is a wasteful number, since it uses less digits than its factorization.

20972496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1339 (or 1333 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 20972496 is about 4579.5737792943. The cubic root of 20972496 is about 275.7719182693.

The spelling of 20972496 in words is "twenty million, nine hundred seventy-two thousand, four hundred ninety-six".