47372440 has 32 divisors (see below), whose sum is σ = 106926480. Its totient is φ = 18888832.

The previous prime is 47372419. The next prime is 47372441. The reversal of 47372440 is 4427374.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47372441) 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, 12174 + ... + 15586.

Almost surely, 2^47372440 is an apocalyptic number.

47372440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47372440 is an abundant number, since it is smaller than the sum of its proper divisors (59554040).

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

47372440 is a wasteful number, since it uses less digits than its factorization.

47372440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3771 (or 3767 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 31.

The square root of 47372440 is about 6882.7639796814. The cubic root of 47372440 is about 361.8333431049.

The spelling of 47372440 in words is "forty-seven million, three hundred seventy-two thousand, four hundred forty".