47120172 has 48 divisors (see below), whose sum is σ = 120352512. Its totient is φ = 14230080.

The previous prime is 47120159. The next prime is 47120189. The reversal of 47120172 is 27102174.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63918 + ... + 64650.

It is an arithmetic number, because the mean of its divisors is an integer number (2507344).

Almost surely, 2^47120172 is an apocalyptic number.

It is an amenable number.

47120172 is an abundant number, since it is smaller than the sum of its proper divisors (73232340).

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

47120172 is a wasteful number, since it uses less digits than its factorization.

47120172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238 (or 1236 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 24.

The square root of 47120172 is about 6864.4134490865. The cubic root of 47120172 is about 361.1899206051.

The spelling of 47120172 in words is "forty-seven million, one hundred twenty thousand, one hundred seventy-two".