47539720 has 32 divisors (see below), whose sum is σ = 107205120. Its totient is φ = 18973120.

The previous prime is 47539711. The next prime is 47539721. The reversal of 47539720 is 2793574.

It is a self number, because there is not a number n which added to its sum of digits gives 47539720.

It is not an unprimeable number, because it can be changed into a prime (47539721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21465 + ... + 23575.

It is an arithmetic number, because the mean of its divisors is an integer number (3350160).

Almost surely, 2^47539720 is an apocalyptic number.

47539720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47539720 is an abundant number, since it is smaller than the sum of its proper divisors (59665400).

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

47539720 is a wasteful number, since it uses less digits than its factorization.

47539720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2685 (or 2681 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 47539720 is about 6894.9053655580. The cubic root of 47539720 is about 362.2587407753.

The spelling of 47539720 in words is "forty-seven million, five hundred thirty-nine thousand, seven hundred twenty".