8915920 has 40 divisors (see below), whose sum is σ = 22326696. Its totient is φ = 3291648.

The previous prime is 8915917. The next prime is 8915953. The reversal of 8915920 is 295198.

It can be written as a sum of positive squares in 4 ways, for example, as 11664 + 8904256 = 108^2 + 2984^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 3247 + ... + 5326.

Almost surely, 2^8915920 is an apocalyptic number.

8915920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8915920 is an abundant number, since it is smaller than the sum of its proper divisors (13410776).

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

8915920 is a wasteful number, since it uses less digits than its factorization.

8915920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8599 (or 8593 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 8915920 is about 2985.9537839692. The cubic root of 8915920 is about 207.3586011073.

The spelling of 8915920 in words is "eight million, nine hundred fifteen thousand, nine hundred twenty".