7881860 has 24 divisors (see below), whose sum is σ = 18916800. Its totient is φ = 2702304.

The previous prime is 7881859. The next prime is 7881889. The reversal of 7881860 is 681887.

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, 28010 + ... + 28289.

It is an arithmetic number, because the mean of its divisors is an integer number (788200).

Almost surely, 2^7881860 is an apocalyptic number.

7881860 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7881860 is an abundant number, since it is smaller than the sum of its proper divisors (11034940).

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

7881860 is a wasteful number, since it uses less digits than its factorization.

7881860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56315 (or 56313 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 38.

The square root of 7881860 is about 2807.4650487584. The cubic root of 7881860 is about 199.0106136440.

The spelling of 7881860 in words is "seven million, eight hundred eighty-one thousand, eight hundred sixty".