8731072 has 28 divisors (see below), whose sum is σ = 19801840. Its totient is φ = 3741696.

The previous prime is 8731069. The next prime is 8731097. The reversal of 8731072 is 2701378.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (28).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 8731072.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9297 + ... + 10192.

Almost surely, 2^8731072 is an apocalyptic number.

It is an amenable number.

8731072 is an abundant number, since it is smaller than the sum of its proper divisors (11070768).

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

8731072 is a wasteful number, since it uses less digits than its factorization.

8731072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19508 (or 19498 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 8731072 is about 2954.8387434850. The cubic root of 8731072 is about 205.9155716483.

The spelling of 8731072 in words is "eight million, seven hundred thirty-one thousand, seventy-two".