20185944 has 16 divisors (see below), whose sum is σ = 50464920. Its totient is φ = 6728640.

The previous prime is 20185883. The next prime is 20185967. The reversal of 20185944 is 44958102.

It is a super-2 number, since 2×20185944² = 814944670342272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 420517 + ... + 420564.

Almost surely, 2^20185944 is an apocalyptic number.

20185944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20185944 is an abundant number, since it is smaller than the sum of its proper divisors (30278976).

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

20185944 is a wasteful number, since it uses less digits than its factorization.

20185944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841090 (or 841086 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 20185944 is about 4492.8770292542. The cubic root of 20185944 is about 272.2803841726.

The spelling of 20185944 in words is "twenty million, one hundred eighty-five thousand, nine hundred forty-four".