20427968 has 28 divisors (see below), whose sum is σ = 44223432. Its totient is φ = 9285120.

The previous prime is 20427943. The next prime is 20427971. The reversal of 20427968 is 86972402.

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, 13805 + ... + 15212.

Almost surely, 2^20427968 is an apocalyptic number.

It is an amenable number.

20427968 is an abundant number, since it is smaller than the sum of its proper divisors (23795464).

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

20427968 is a wasteful number, since it uses less digits than its factorization.

20427968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29040 (or 29030 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 20427968 is about 4519.7309654447. The cubic root of 20427968 is about 273.3642532277.

The spelling of 20427968 in words is "twenty million, four hundred twenty-seven thousand, nine hundred sixty-eight".