8731872 has 36 divisors (see below), whose sum is σ = 24832080. Its totient is φ = 2910528.

The previous prime is 8731867. The next prime is 8731873. The reversal of 8731872 is 2781378.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8731873) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14872 + ... + 15447.

It is an arithmetic number, because the mean of its divisors is an integer number (689780).

Almost surely, 2^8731872 is an apocalyptic number.

It is an amenable number.

8731872 is an abundant number, since it is smaller than the sum of its proper divisors (16100208).

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

8731872 is a wasteful number, since it uses less digits than its factorization.

8731872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30335 (or 30324 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 8731872 is about 2954.9741115617. The cubic root of 8731872 is about 205.9218605831.

The spelling of 8731872 in words is "eight million, seven hundred thirty-one thousand, eight hundred seventy-two".