47878564 has 12 divisors (see below), whose sum is σ = 83844684. Its totient is φ = 23922944.

The previous prime is 47878553. The next prime is 47878573. The reversal of 47878564 is 46587874.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 45292900 + 2585664 = 6730^2 + 1608^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4524 + ... + 10780.

It is an arithmetic number, because the mean of its divisors is an integer number (6987057).

Almost surely, 2^47878564 is an apocalyptic number.

It is an amenable number.

47878564 is a deficient number, since it is larger than the sum of its proper divisors (35966120).

47878564 is a wasteful number, since it uses less digits than its factorization.

47878564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8174 (or 8172 counting only the distinct ones).

The product of its digits is 1505280, while the sum is 49.

The square root of 47878564 is about 6919.4337918648. The cubic root of 47878564 is about 363.1173821701.

The spelling of 47878564 in words is "forty-seven million, eight hundred seventy-eight thousand, five hundred sixty-four".