47720736 has 72 divisors (see below), whose sum is σ = 155098944. Its totient is φ = 13633920.

The previous prime is 47720731. The next prime is 47720741. The reversal of 47720736 is 63702774.

It is an interprime number because it is at equal distance from previous prime (47720731) and next prime (47720741).

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 self number, because there is not a number n which added to its sum of digits gives 47720736.

It is not an unprimeable number, because it can be changed into a prime (47720731) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9820 + ... + 13851.

It is an arithmetic number, because the mean of its divisors is an integer number (2154152).

Almost surely, 2^47720736 is an apocalyptic number.

It is an amenable number.

47720736 is an abundant number, since it is smaller than the sum of its proper divisors (107378208).

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

47720736 is a wasteful number, since it uses less digits than its factorization.

47720736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23694 (or 23683 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 36.

The square root of 47720736 is about 6908.0196872910. The cubic root of 47720736 is about 362.7179467809.

The spelling of 47720736 in words is "forty-seven million, seven hundred twenty thousand, seven hundred thirty-six".