20968672 has 24 divisors (see below), whose sum is σ = 41592096. Its totient is φ = 10405632.

The previous prime is 20968613. The next prime is 20968693. The reversal of 20968672 is 27686902.

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, 1993 + ... + 6775.

It is an arithmetic number, because the mean of its divisors is an integer number (1733004).

Almost surely, 2^20968672 is an apocalyptic number.

It is an amenable number.

20968672 is a deficient number, since it is larger than the sum of its proper divisors (20623424).

20968672 is a wasteful number, since it uses less digits than its factorization.

20968672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4930 (or 4922 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 20968672 is about 4579.1562541586. The cubic root of 20968672 is about 275.7551563809.

The spelling of 20968672 in words is "twenty million, nine hundred sixty-eight thousand, six hundred seventy-two".