7995520 has 96 divisors (see below), whose sum is σ = 21270060. Its totient is φ = 2856960.

The previous prime is 7995509. The next prime is 7995529. The reversal of 7995520 is 255997.

It can be written as a sum of positive squares in 2 ways, for example, as 7441984 + 553536 = 2728^2 + 744^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7995520.

It is not an unprimeable number, because it can be changed into a prime (7995529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 257905 + ... + 257935.

Almost surely, 2^7995520 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 7995520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10635030).

7995520 is an abundant number, since it is smaller than the sum of its proper divisors (13274540).

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

7995520 is a wasteful number, since it uses less digits than its factorization.

7995520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94 (or 51 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 37.

The square root of 7995520 is about 2827.6350542459. The cubic root of 7995520 is about 199.9626596956.

It can be divided in two parts, 7995 and 520, that added together give a triangular number (8515 = T₁₃₀).

The spelling of 7995520 in words is "seven million, nine hundred ninety-five thousand, five hundred twenty".