47931472 has 20 divisors (see below), whose sum is σ = 93463636. Its totient is φ = 23811840.

The previous prime is 47931467. The next prime is 47931511. The reversal of 47931472 is 27413974.

It can be written as a sum of positive squares in 2 ways, for example, as 10916416 + 37015056 = 3304^2 + 6084^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7029 + ... + 12052.

Almost surely, 2^47931472 is an apocalyptic number.

It is an amenable number.

47931472 is a deficient number, since it is larger than the sum of its proper divisors (45532164).

47931472 is a wasteful number, since it uses less digits than its factorization.

47931472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19246 (or 19240 counting only the distinct ones).

The product of its digits is 42336, while the sum is 37.

The square root of 47931472 is about 6923.2558814477. The cubic root of 47931472 is about 363.2510866964.

The spelling of 47931472 in words is "forty-seven million, nine hundred thirty-one thousand, four hundred seventy-two".