7881080 has 32 divisors (see below), whose sum is σ = 17982000. Its totient is φ = 3108096.

The previous prime is 7881079. The next prime is 7881089. The reversal of 7881080 is 801887.

It is a super-2 number, since 2×7881080² = 124222843932800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7881089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1571 + ... + 4269.

Almost surely, 2^7881080 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 7881080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8991000).

7881080 is an abundant number, since it is smaller than the sum of its proper divisors (10100920).

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

7881080 is a wasteful number, since it uses less digits than its factorization.

7881080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2783 (or 2779 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 32.

The square root of 7881080 is about 2807.3261299678. The cubic root of 7881080 is about 199.0040486369.

The spelling of 7881080 in words is "seven million, eight hundred eighty-one thousand, eighty".