7868540 has 24 divisors (see below), whose sum is σ = 16582272. Its totient is φ = 3136320.

The previous prime is 7868537. The next prime is 7868551. The reversal of 7868540 is 458687.

It is a junction number, because it is equal to n+sod(n) for n = 7868494 and 7868503.

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, 7445 + ... + 8435.

It is an arithmetic number, because the mean of its divisors is an integer number (690928).

Almost surely, 2^7868540 is an apocalyptic number.

It is an amenable number.

7868540 is an abundant number, since it is smaller than the sum of its proper divisors (8713732).

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

7868540 is a wasteful number, since it uses less digits than its factorization.

7868540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397 (or 1395 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 7868540 is about 2805.0917988544. The cubic root of 7868540 is about 198.8984440108.

The spelling of 7868540 in words is "seven million, eight hundred sixty-eight thousand, five hundred forty".