20801404 has 24 divisors (see below), whose sum is σ = 41510448. Its totient is φ = 9035520.

The previous prime is 20801393. The next prime is 20801413. The reversal of 20801404 is 40410802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10882 + ... + 12649.

It is an arithmetic number, because the mean of its divisors is an integer number (1729602).

Almost surely, 2^20801404 is an apocalyptic number.

It is an amenable number.

20801404 is a deficient number, since it is larger than the sum of its proper divisors (20709044).

20801404 is a wasteful number, since it uses less digits than its factorization.

20801404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23565 (or 23563 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 20801404 is about 4560.8556214816. The cubic root of 20801404 is about 275.0199610855.

The spelling of 20801404 in words is "twenty million, eight hundred one thousand, four hundred four".