20944404 has 36 divisors (see below), whose sum is σ = 57016596. Its totient is φ = 6444288.

The previous prime is 20944393. The next prime is 20944453. The reversal of 20944404 is 40444902.

It can be written as a sum of positive squares in 2 ways, for example, as 4928400 + 16016004 = 2220^2 + 4002^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21909 + ... + 22844.

Almost surely, 2^20944404 is an apocalyptic number.

It is an amenable number.

20944404 is an abundant number, since it is smaller than the sum of its proper divisors (36072192).

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

20944404 is a wasteful number, since it uses less digits than its factorization.

20944404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44776 (or 44771 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 20944404 is about 4576.5056538805. The cubic root of 20944404 is about 275.6487339767.

The spelling of 20944404 in words is "twenty million, nine hundred forty-four thousand, four hundred four".