20179072 has 16 divisors (see below), whose sum is σ = 40200750. Its totient is φ = 10089472.

The previous prime is 20179069. The next prime is 20179129. The reversal of 20179072 is 27097102.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18870336 + 1308736 = 4344^2 + 1144^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a self number, because there is not a number n which added to its sum of digits gives 20179072.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78697 + ... + 78952.

Almost surely, 2^20179072 is an apocalyptic number.

It is an amenable number.

20179072 is a deficient number, since it is larger than the sum of its proper divisors (20021678).

20179072 is an equidigital number, since it uses as much as digits as its factorization.

20179072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157663 (or 157651 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 20179072 is about 4492.1121980645. The cubic root of 20179072 is about 272.2494827498.

The spelling of 20179072 in words is "twenty million, one hundred seventy-nine thousand, seventy-two".