20179944 has 24 divisors (see below), whose sum is σ = 54654210. Its totient is φ = 6726624.

The previous prime is 20179937. The next prime is 20179961. The reversal of 20179944 is 44997102.

It can be written as a sum of positive squares in only one way, i.e., 13616100 + 6563844 = 3690^2 + 2562^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 20179899 and 20179908.

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, 140067 + ... + 140210.

Almost surely, 2^20179944 is an apocalyptic number.

20179944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20179944 is an abundant number, since it is smaller than the sum of its proper divisors (34474266).

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

20179944 is a wasteful number, since it uses less digits than its factorization.

20179944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280289 (or 280282 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 20179944 is about 4492.2092560343. The cubic root of 20179944 is about 272.2534042736.

The spelling of 20179944 in words is "twenty million, one hundred seventy-nine thousand, nine hundred forty-four".