47221732 has 6 divisors (see below), whose sum is σ = 82638038. Its totient is φ = 23610864.

The previous prime is 47221723. The next prime is 47221739. The reversal of 47221732 is 23712274.

It can be written as a sum of positive squares in only one way, i.e., 46457856 + 763876 = 6816^2 + 874^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 47221732.

It is not an unprimeable number, because it can be changed into a prime (47221739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5902713 + ... + 5902720.

Almost surely, 2^47221732 is an apocalyptic number.

It is an amenable number.

47221732 is a deficient number, since it is larger than the sum of its proper divisors (35416306).

47221732 is a wasteful number, since it uses less digits than its factorization.

47221732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11805437 (or 11805435 counting only the distinct ones).

The product of its digits is 4704, while the sum is 28.

The square root of 47221732 is about 6871.8070403643. The cubic root of 47221732 is about 361.4492301103.

The spelling of 47221732 in words is "forty-seven million, two hundred twenty-one thousand, seven hundred thirty-two".