20968976 has 20 divisors (see below), whose sum is σ = 46431552. Its totient is φ = 8986656.

The previous prime is 20968957. The next prime is 20968979. The reversal of 20968976 is 67986902.

It is a self number, because there is not a number n which added to its sum of digits gives 20968976.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20968979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93500 + ... + 93723.

Almost surely, 2^20968976 is an apocalyptic number.

It is an amenable number.

20968976 is an abundant number, since it is smaller than the sum of its proper divisors (25462576).

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

20968976 is a wasteful number, since it uses less digits than its factorization.

20968976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187238 (or 187232 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 20968976 is about 4579.1894479263. The cubic root of 20968976 is about 275.7564889905.

The spelling of 20968976 in words is "twenty million, nine hundred sixty-eight thousand, nine hundred seventy-six".