47057720 has 64 divisors (see below), whose sum is σ = 110808000. Its totient is φ = 17963008.

The previous prime is 47057687. The next prime is 47057723. The reversal of 47057720 is 2775074.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47057723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130901 + ... + 131259.

It is an arithmetic number, because the mean of its divisors is an integer number (1731375).

Almost surely, 2^47057720 is an apocalyptic number.

47057720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47057720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55404000).

47057720 is an abundant number, since it is smaller than the sum of its proper divisors (63750280).

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

47057720 is a wasteful number, since it uses less digits than its factorization.

47057720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512 (or 508 counting only the distinct ones).

The product of its (nonzero) digits is 13720, while the sum is 32.

The square root of 47057720 is about 6859.8629723924. The cubic root of 47057720 is about 361.0302790982.

The spelling of 47057720 in words is "forty-seven million, fifty-seven thousand, seven hundred twenty".