7868280 has 256 divisors, whose sum is σ = 31104000. Its totient is φ = 1548288.

The previous prime is 7868233. The next prime is 7868293. The reversal of 7868280 is 828687.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 271306 + ... + 271334.

It is an arithmetic number, because the mean of its divisors is an integer number (121500).

Almost surely, 2^7868280 is an apocalyptic number.

7868280 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7868280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15552000).

7868280 is an abundant number, since it is smaller than the sum of its proper divisors (23235720).

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

7868280 is a wasteful number, since it uses less digits than its factorization.

7868280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 7868280 is about 2805.0454541772. The cubic root of 7868280 is about 198.8962532543.

The spelling of 7868280 in words is "seven million, eight hundred sixty-eight thousand, two hundred eighty".