47947904 has 32 divisors (see below), whose sum is σ = 98822700. Its totient is φ = 23145472.

The previous prime is 47947903. The next prime is 47947909. The reversal of 47947904 is 40974974.

It can be written as a sum of positive squares in 2 ways, for example, as 47886400 + 61504 = 6920^2 + 248^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (47947903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2747 + ... + 10170.

Almost surely, 2^47947904 is an apocalyptic number.

It is an amenable number.

47947904 is an abundant number, since it is smaller than the sum of its proper divisors (50874796).

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

47947904 is a wasteful number, since it uses less digits than its factorization.

47947904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12960 (or 12948 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 47947904 is about 6924.4425046353. The cubic root of 47947904 is about 363.2925922016.

The spelling of 47947904 in words is "forty-seven million, nine hundred forty-seven thousand, nine hundred four".