7868520 has 96 divisors (see below), whose sum is σ = 27911520. Its totient is φ = 1906560.

The previous prime is 7868503. The next prime is 7868521. The reversal of 7868520 is 258687.

7868520 is a `hidden beast` number, since 78 + 68 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (7868521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2967 + ... + 4953.

It is an arithmetic number, because the mean of its divisors is an integer number (290745).

Almost surely, 2^7868520 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 7868520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13955760).

7868520 is an abundant number, since it is smaller than the sum of its proper divisors (20043000).

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

7868520 is a wasteful number, since it uses less digits than its factorization.

7868520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2015 (or 2008 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 7868520 is about 2805.0882339064. The cubic root of 7868520 is about 198.8982754928.

The spelling of 7868520 in words is "seven million, eight hundred sixty-eight thousand, five hundred twenty".