20049444 has 36 divisors (see below), whose sum is σ = 52560144. Its totient is φ = 6682824.

The previous prime is 20049433. The next prime is 20049457. The reversal of 20049444 is 44494002.

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

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9342 + ... + 11285.

It is an arithmetic number, because the mean of its divisors is an integer number (1460004).

Almost surely, 2^20049444 is an apocalyptic number.

It is an amenable number.

20049444 is an abundant number, since it is smaller than the sum of its proper divisors (32510700).

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

20049444 is a wasteful number, since it uses less digits than its factorization.

20049444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20646 (or 20632 counting only the distinct ones).

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

The square root of 20049444 is about 4477.6605498854. The cubic root of 20049444 is about 271.6652636877.

The spelling of 20049444 in words is "twenty million, forty-nine thousand, four hundred forty-four".