47771940 has 48 divisors (see below), whose sum is σ = 134467200. Its totient is φ = 12672000.

The previous prime is 47771917. The next prime is 47771951. The reversal of 47771940 is 4917774.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9940 + ... + 13940.

It is an arithmetic number, because the mean of its divisors is an integer number (2801400).

Almost surely, 2^47771940 is an apocalyptic number.

It is an amenable number.

47771940 is an abundant number, since it is smaller than the sum of its proper divisors (86695260).

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

47771940 is a wasteful number, since it uses less digits than its factorization.

47771940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4212 (or 4210 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 39.

The square root of 47771940 is about 6911.7248209112. The cubic root of 47771940 is about 362.8476316412.

The spelling of 47771940 in words is "forty-seven million, seven hundred seventy-one thousand, nine hundred forty".