47639520 has 72 divisors (see below), whose sum is σ = 162574776. Its totient is φ = 12703488.

The previous prime is 47639483. The next prime is 47639531. The reversal of 47639520 is 2593674.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15102 + ... + 17981.

It is an arithmetic number, because the mean of its divisors is an integer number (2257983).

Almost surely, 2^47639520 is an apocalyptic number.

47639520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47639520 is an abundant number, since it is smaller than the sum of its proper divisors (114935256).

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

47639520 is a wasteful number, since it uses less digits than its factorization.

47639520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33104 (or 33093 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 47639520 is about 6902.1387989521. The cubic root of 47639520 is about 362.5120598445.

The spelling of 47639520 in words is "forty-seven million, six hundred thirty-nine thousand, five hundred twenty".