20956044 has 12 divisors (see below), whose sum is σ = 48897464. Its totient is φ = 6985344.

The previous prime is 20956021. The next prime is 20956051. The reversal of 20956044 is 44065902.

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

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, 873157 + ... + 873180.

Almost surely, 2^20956044 is an apocalyptic number.

It is an amenable number.

20956044 is an abundant number, since it is smaller than the sum of its proper divisors (27941420).

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

20956044 is a wasteful number, since it uses less digits than its factorization.

20956044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746344 (or 1746342 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 20956044 is about 4577.7771898597. Note that the first 3 decimals coincide. The cubic root of 20956044 is about 275.6997890947.

The spelling of 20956044 in words is "twenty million, nine hundred fifty-six thousand, forty-four".