8591120 has 40 divisors (see below), whose sum is σ = 21152664. Its totient is φ = 3233792.

The previous prime is 8591119. The next prime is 8591129. The reversal of 8591120 is 211958.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1893376 + 6697744 = 1376^2 + 2588^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 8591120.

It is not an unprimeable number, because it can be changed into a prime (8591129) 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, 1799 + ... + 4518.

Almost surely, 2^8591120 is an apocalyptic number.

8591120 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8591120 is an abundant number, since it is smaller than the sum of its proper divisors (12561544).

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

8591120 is a wasteful number, since it uses less digits than its factorization.

8591120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6347 (or 6341 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 8591120 is about 2931.0612412572. The cubic root of 8591120 is about 204.8094203430.

The spelling of 8591120 in words is "eight million, five hundred ninety-one thousand, one hundred twenty".