47191328 has 24 divisors (see below), whose sum is σ = 95176620. Its totient is φ = 23019520.

The previous prime is 47191321. The next prime is 47191343. The reversal of 47191328 is 82319174.

It can be written as a sum of positive squares in 2 ways, for example, as 47169424 + 21904 = 6868^2 + 148^2 .

It is not an unprimeable number, because it can be changed into a prime (47191321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16673 + ... + 19296.

Almost surely, 2^47191328 is an apocalyptic number.

It is an amenable number.

47191328 is an abundant number, since it is smaller than the sum of its proper divisors (47985292).

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

47191328 is a wasteful number, since it uses less digits than its factorization.

47191328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36020 (or 36012 counting only the distinct ones).

The product of its digits is 12096, while the sum is 35.

The square root of 47191328 is about 6869.5944567347. The cubic root of 47191328 is about 361.3716396922.

The spelling of 47191328 in words is "forty-seven million, one hundred ninety-one thousand, three hundred twenty-eight".