20446404 has 24 divisors (see below), whose sum is σ = 52045728. Its totient is φ = 6195840.

The previous prime is 20446399. The next prime is 20446411. The reversal of 20446404 is 40464402.

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, 77317 + ... + 77580.

It is an arithmetic number, because the mean of its divisors is an integer number (2168572).

Almost surely, 2^20446404 is an apocalyptic number.

It is an amenable number.

20446404 is an abundant number, since it is smaller than the sum of its proper divisors (31599324).

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

20446404 is a wasteful number, since it uses less digits than its factorization.

20446404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154915 (or 154913 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 20446404 is about 4521.7700074197. The cubic root of 20446404 is about 273.4464645050.

It can be divided in two parts, 2044 and 6404, that added together give a palindrome (8448).

The spelling of 20446404 in words is "twenty million, four hundred forty-six thousand, four hundred four".