20944444 has 24 divisors (see below), whose sum is σ = 38441088. Its totient is φ = 9966000.

The previous prime is 20944393. The next prime is 20944453. The reversal of 20944444 is 44444902.

It is a hoax number, since the sum of its digits (31) 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, 22639 + ... + 23545.

It is an arithmetic number, because the mean of its divisors is an integer number (1601712).

Almost surely, 2^20944444 is an apocalyptic number.

It is an amenable number.

20944444 is a deficient number, since it is larger than the sum of its proper divisors (17496644).

20944444 is a wasteful number, since it uses less digits than its factorization.

20944444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185 (or 1183 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

The square root of 20944444 is about 4576.5100240249. The cubic root of 20944444 is about 275.6489094562.

The spelling of 20944444 in words is "twenty million, nine hundred forty-four thousand, four hundred forty-four".