20179120 has 40 divisors (see below), whose sum is σ = 50528016. Its totient is φ = 7450368.

The previous prime is 20179069. The next prime is 20179129. The reversal of 20179120 is 2197102.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 20179091 and 20179100.

It is not an unprimeable number, because it can be changed into a prime (20179129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8662 + ... + 10741.

Almost surely, 2^20179120 is an apocalyptic number.

20179120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20179120 is an abundant number, since it is smaller than the sum of its proper divisors (30348896).

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

20179120 is a wasteful number, since it uses less digits than its factorization.

20179120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19429 (or 19423 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 20179120 is about 4492.1175407596. The cubic root of 20179120 is about 272.2496986165.

The spelling of 20179120 in words is "twenty million, one hundred seventy-nine thousand, one hundred twenty".