87108780 has 96 divisors (see below), whose sum is σ = 270708480. Its totient is φ = 20750080.

The previous prime is 87108773. The next prime is 87108811. The reversal of 87108780 is 8780178.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37822 + ... + 40058.

It is an arithmetic number, because the mean of its divisors is an integer number (2819880).

Almost surely, 2^87108780 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 87108780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135354240).

87108780 is an abundant number, since it is smaller than the sum of its proper divisors (183599700).

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

87108780 is a wasteful number, since it uses less digits than its factorization.

87108780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2319 (or 2317 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 39.

The square root of 87108780 is about 9333.2084515455. The cubic root of 87108780 is about 443.2893631682.

The spelling of 87108780 in words is "eighty-seven million, one hundred eight thousand, seven hundred eighty".