47790172 has 12 divisors (see below), whose sum is σ = 84166600. Its totient is φ = 23742576.

The previous prime is 47790163. The next prime is 47790191. The reversal of 47790172 is 27109774.

47790172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 37422 + ... + 38677.

Almost surely, 2^47790172 is an apocalyptic number.

It is an amenable number.

47790172 is a deficient number, since it is larger than the sum of its proper divisors (36376428).

47790172 is a wasteful number, since it uses less digits than its factorization.

47790172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76260 (or 76258 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 37.

The square root of 47790172 is about 6913.0436133443. The cubic root of 47790172 is about 362.8937856290.

The spelling of 47790172 in words is "forty-seven million, seven hundred ninety thousand, one hundred seventy-two".