180172296 has 32 divisors (see below), whose sum is σ = 500479200. Its totient is φ = 60057360.

The previous prime is 180172261. The next prime is 180172303. The reversal of 180172296 is 692271081.

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

It is a self number, because there is not a number n which added to its sum of digits gives 180172296.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416850 + ... + 417281.

It is an arithmetic number, because the mean of its divisors is an integer number (15639975).

Almost surely, 2^180172296 is an apocalyptic number.

It is an amenable number.

180172296 is an abundant number, since it is smaller than the sum of its proper divisors (320306904).

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

180172296 is a wasteful number, since it uses less digits than its factorization.

180172296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834146 (or 834136 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 180172296 is about 13422.8274219704. The cubic root of 180172296 is about 564.8017118161.

The spelling of 180172296 in words is "one hundred eighty million, one hundred seventy-two thousand, two hundred ninety-six".