20969044 has 12 divisors (see below), whose sum is σ = 36728244. Its totient is φ = 10475264.

The previous prime is 20969029. The next prime is 20969087. The reversal of 20969044 is 44096902.

It can be written as a sum of positive squares in 2 ways, for example, as 8928144 + 12040900 = 2988^2 + 3470^2 .

It is a congruent number.

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, 6564 + ... + 9220.

It is an arithmetic number, because the mean of its divisors is an integer number (3060687).

Almost surely, 2^20969044 is an apocalyptic number.

It is an amenable number.

20969044 is a deficient number, since it is larger than the sum of its proper divisors (15759200).

20969044 is a wasteful number, since it uses less digits than its factorization.

20969044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4634 (or 4632 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 20969044 is about 4579.1968728151. The cubic root of 20969044 is about 275.7567870725.

The spelling of 20969044 in words is "twenty million, nine hundred sixty-nine thousand, forty-four".