47780328 has 32 divisors (see below), whose sum is σ = 119635200. Its totient is φ = 15902208.

The previous prime is 47780323. The next prime is 47780347. The reversal of 47780328 is 82308774.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (47780323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21225 + ... + 23367.

It is an arithmetic number, because the mean of its divisors is an integer number (3738600).

Almost surely, 2^47780328 is an apocalyptic number.

It is an amenable number.

47780328 is an abundant number, since it is smaller than the sum of its proper divisors (71854872).

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

47780328 is a wasteful number, since it uses less digits than its factorization.

47780328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3081 (or 3077 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 47780328 is about 6912.3315892686. The cubic root of 47780328 is about 362.8688671741.

The spelling of 47780328 in words is "forty-seven million, seven hundred eighty thousand, three hundred twenty-eight".