20992444 has 24 divisors (see below), whose sum is σ = 40336128. Its totient is φ = 9480240.

The previous prime is 20992427. The next prime is 20992453. The reversal of 20992444 is 44429902.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

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, 5709 + ... + 8635.

It is an arithmetic number, because the mean of its divisors is an integer number (1680672).

Almost surely, 2^20992444 is an apocalyptic number.

It is an amenable number.

20992444 is a deficient number, since it is larger than the sum of its proper divisors (19343684).

20992444 is a wasteful number, since it uses less digits than its factorization.

20992444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3105 (or 3103 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 20992444 is about 4581.7511935940. The cubic root of 20992444 is about 275.8593240955.

The spelling of 20992444 in words is "twenty million, nine hundred ninety-two thousand, four hundred forty-four".