7987860 has 72 divisors (see below), whose sum is σ = 24460800. Its totient is φ = 2109888.

The previous prime is 7987843. The next prime is 7987867. The reversal of 7987860 is 687897.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7987867) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35709 + ... + 35931.

Almost surely, 2^7987860 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 7987860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12230400).

7987860 is an abundant number, since it is smaller than the sum of its proper divisors (16472940).

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

7987860 is a wasteful number, since it uses less digits than its factorization.

7987860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437 (or 432 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 7987860 is about 2826.2802408820. The cubic root of 7987860 is about 199.8987821167.

The spelling of 7987860 in words is "seven million, nine hundred eighty-seven thousand, eight hundred sixty".