47858728 has 8 divisors (see below), whose sum is σ = 89735130. Its totient is φ = 23929360.

The previous prime is 47858717. The next prime is 47858731. The reversal of 47858728 is 82785874.

It can be written as a sum of positive squares in only one way, i.e., 47858724 + 4 = 6918^2 + 2^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2991163 + ... + 2991178.

Almost surely, 2^47858728 is an apocalyptic number.

It is an amenable number.

47858728 is a deficient number, since it is larger than the sum of its proper divisors (41876402).

47858728 is a wasteful number, since it uses less digits than its factorization.

47858728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5982347 (or 5982343 counting only the distinct ones).

The product of its digits is 1003520, while the sum is 49.

The square root of 47858728 is about 6918.0002891009. Note that the first 3 decimals coincide. The cubic root of 47858728 is about 363.0672289580.

The spelling of 47858728 in words is "forty-seven million, eight hundred fifty-eight thousand, seven hundred twenty-eight".