7856280 has 96 divisors (see below), whose sum is σ = 25880400. Its totient is φ = 2066688.

The previous prime is 7856279. The next prime is 7856293. The reversal of 7856280 is 826587.

7856280 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×7856280² = 123442270876800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49962 + ... + 50118.

Almost surely, 2^7856280 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 7856280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12940200).

7856280 is an abundant number, since it is smaller than the sum of its proper divisors (18024120).

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

7856280 is a wasteful number, since it uses less digits than its factorization.

7856280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313 (or 306 counting only the distinct ones).

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

The square root of 7856280 is about 2802.9056352293. The cubic root of 7856280 is about 198.7950888565.

The spelling of 7856280 in words is "seven million, eight hundred fifty-six thousand, two hundred eighty".