8620728 has 32 divisors (see below), whose sum is σ = 22248960. Its totient is φ = 2780640.

The previous prime is 8620727. The next prime is 8620739. The reversal of 8620728 is 8270268.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8620721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5050 + ... + 6537.

It is an arithmetic number, because the mean of its divisors is an integer number (695280).

Almost surely, 2^8620728 is an apocalyptic number.

It is an amenable number.

8620728 is an abundant number, since it is smaller than the sum of its proper divisors (13628232).

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

8620728 is a wasteful number, since it uses less digits than its factorization.

8620728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11627 (or 11623 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 8620728 is about 2936.1076274551. The cubic root of 8620728 is about 205.0444321695.

The spelling of 8620728 in words is "eight million, six hundred twenty thousand, seven hundred twenty-eight".