47207728 has 20 divisors (see below), whose sum is σ = 93697128. Its totient is φ = 23027840.

The previous prime is 47207689. The next prime is 47207747. The reversal of 47207728 is 82770274.

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, 35326 + ... + 36637.

Almost surely, 2^47207728 is an apocalyptic number.

It is an amenable number.

47207728 is a deficient number, since it is larger than the sum of its proper divisors (46489400).

47207728 is a wasteful number, since it uses less digits than its factorization.

47207728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72012 (or 72006 counting only the distinct ones).

The product of its (nonzero) digits is 43904, while the sum is 37.

The square root of 47207728 is about 6870.7880188520. The cubic root of 47207728 is about 361.4134963125.

The spelling of 47207728 in words is "forty-seven million, two hundred seven thousand, seven hundred twenty-eight".