20974672 has 20 divisors (see below), whose sum is σ = 40952736. Its totient is φ = 10406240.

The previous prime is 20974663. The next prime is 20974687. The reversal of 20974672 is 27647902.

It is a happy number.

It is a congruent number.

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, 2908 + ... + 7099.

Almost surely, 2^20974672 is an apocalyptic number.

It is an amenable number.

20974672 is a deficient number, since it is larger than the sum of its proper divisors (19978064).

20974672 is a wasteful number, since it uses less digits than its factorization.

20974672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10146 (or 10140 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 20974672 is about 4579.8113498265. The cubic root of 20974672 is about 275.7814555055.

The spelling of 20974672 in words is "twenty million, nine hundred seventy-four thousand, six hundred seventy-two".