20180944 has 30 divisors (see below), whose sum is σ = 45486114. Its totient is φ = 8648640.

The previous prime is 20180933. The next prime is 20180971. The reversal of 20180944 is 44908102.

It can be written as a sum of positive squares in only one way, i.e., 18593344 + 1587600 = 4312^2 + 1260^2 .

It is a super-2 number, since 2×20180944² = 814541001462272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12087 + ... + 13654.

Almost surely, 2^20180944 is an apocalyptic number.

It is an amenable number.

20180944 is an abundant number, since it is smaller than the sum of its proper divisors (25305170).

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

20180944 is a wasteful number, since it uses less digits than its factorization.

20180944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25763 (or 25750 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 20180944 is about 4492.3205584642. The cubic root of 20180944 is about 272.2579012948.

The spelling of 20180944 in words is "twenty million, one hundred eighty thousand, nine hundred forty-four".