20976996 has 12 divisors (see below), whose sum is σ = 48946352. Its totient is φ = 6992328.

The previous prime is 20976983. The next prime is 20977001. The reversal of 20976996 is 69967902.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×20976996² = 880068722368032, which contains 22 as substring.

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, 874030 + ... + 874053.

Almost surely, 2^20976996 is an apocalyptic number.

It is an amenable number.

20976996 is an abundant number, since it is smaller than the sum of its proper divisors (27969356).

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

20976996 is a wasteful number, since it uses less digits than its factorization.

20976996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748090 (or 1748088 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 48.

The square root of 20976996 is about 4580.0650650400. The cubic root of 20976996 is about 275.7916406855.

The spelling of 20976996 in words is "twenty million, nine hundred seventy-six thousand, nine hundred ninety-six".