8657472 has 56 divisors (see below), whose sum is σ = 23282656. Its totient is φ = 2838528.

The previous prime is 8657461. The next prime is 8657503. The reversal of 8657472 is 2747568.

It is a self number, because there is not a number n which added to its sum of digits gives 8657472.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12528 + ... + 13200.

Almost surely, 2^8657472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8657472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11641328).

8657472 is an abundant number, since it is smaller than the sum of its proper divisors (14625184).

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

8657472 is a wasteful number, since it uses less digits than its factorization.

8657472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755 (or 745 counting only the distinct ones).

The product of its digits is 94080, while the sum is 39.

The square root of 8657472 is about 2942.3582378766. The cubic root of 8657472 is about 205.3353385235.

The spelling of 8657472 in words is "eight million, six hundred fifty-seven thousand, four hundred seventy-two".