20949056 has 28 divisors (see below), whose sum is σ = 42915840. Its totient is φ = 10135680.

The previous prime is 20949023. The next prime is 20949079. The reversal of 20949056 is 65094902.

It is a super-2 number, since 2×20949056² = 877725894582272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3296 + ... + 7263.

Almost surely, 2^20949056 is an apocalyptic number.

It is an amenable number.

20949056 is an abundant number, since it is smaller than the sum of its proper divisors (21966784).

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

20949056 is a wasteful number, since it uses less digits than its factorization.

20949056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10602 (or 10592 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 20949056 is about 4577.0138736954. The cubic root of 20949056 is about 275.6691407479.

The spelling of 20949056 in words is "twenty million, nine hundred forty-nine thousand, fifty-six".