20974704 has 20 divisors (see below), whose sum is σ = 54184776. Its totient is φ = 6991552.

The previous prime is 20974691. The next prime is 20974741. The reversal of 20974704 is 40747902.

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 3 ways as a sum of consecutive naturals, for example, 218439 + ... + 218534.

Almost surely, 2^20974704 is an apocalyptic number.

20974704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20974704 is an abundant number, since it is smaller than the sum of its proper divisors (33210072).

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

20974704 is a wasteful number, since it uses less digits than its factorization.

20974704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436984 (or 436978 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 20974704 is about 4579.8148434189. The cubic root of 20974704 is about 275.7815957540.

The spelling of 20974704 in words is "twenty million, nine hundred seventy-four thousand, seven hundred four".