7868240 has 40 divisors (see below), whose sum is σ = 18614880. Its totient is φ = 3092096.

The previous prime is 7868233. The next prime is 7868293. The reversal of 7868240 is 428687.

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 7868240.

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, 3887 + ... + 5553.

It is an arithmetic number, because the mean of its divisors is an integer number (465372).

Almost surely, 2^7868240 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 7868240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9307440).

7868240 is an abundant number, since it is smaller than the sum of its proper divisors (10746640).

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

7868240 is a wasteful number, since it uses less digits than its factorization.

7868240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739 (or 1733 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 7868240 is about 2805.0383241589. The cubic root of 7868240 is about 198.8959162106.

The spelling of 7868240 in words is "seven million, eight hundred sixty-eight thousand, two hundred forty".