47658728 has 32 divisors (see below), whose sum is σ = 98589960. Its totient is φ = 21457920.

The previous prime is 47658727. The next prime is 47658733. The reversal of 47658728 is 82785674.

It can be written as a sum of positive squares in 4 ways, for example, as 29833444 + 17825284 = 5462^2 + 4222^2 .

It is not an unprimeable number, because it can be changed into a prime (47658727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1325 + ... + 9852.

Almost surely, 2^47658728 is an apocalyptic number.

It is an amenable number.

47658728 is an abundant number, since it is smaller than the sum of its proper divisors (50931232).

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

47658728 is a wasteful number, since it uses less digits than its factorization.

47658728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11237 (or 11233 counting only the distinct ones).

The product of its digits is 752640, while the sum is 47.

The square root of 47658728 is about 6903.5301114720. The cubic root of 47658728 is about 362.5607742734.

The spelling of 47658728 in words is "forty-seven million, six hundred fifty-eight thousand, seven hundred twenty-eight".