47507728 has 10 divisors (see below), whose sum is σ = 92046254. Its totient is φ = 23753856.

The previous prime is 47507723. The next prime is 47507731. The reversal of 47507728 is 82770574.

It can be written as a sum of positive squares in only one way, i.e., 42614784 + 4892944 = 6528^2 + 2212^2 .

It is not an unprimeable number, because it can be changed into a prime (47507723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1484601 + ... + 1484632.

Almost surely, 2^47507728 is an apocalyptic number.

It is an amenable number.

47507728 is a deficient number, since it is larger than the sum of its proper divisors (44538526).

47507728 is a wasteful number, since it uses less digits than its factorization.

47507728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2969241 (or 2969235 counting only the distinct ones).

The product of its (nonzero) digits is 109760, while the sum is 40.

The square root of 47507728 is about 6892.5850012894. The cubic root of 47507728 is about 362.1774614976.

The spelling of 47507728 in words is "forty-seven million, five hundred seven thousand, seven hundred twenty-eight".