87159888 has 100 divisors (see below), whose sum is σ = 254992980. Its totient is φ = 28740096.

The previous prime is 87159881. The next prime is 87159893. The reversal of 87159888 is 88895178.

It can be written as a sum of positive squares in 2 ways, for example, as 26132544 + 61027344 = 5112^2 + 7812^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87159881) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 140956 + ... + 141572.

Almost surely, 2^87159888 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 87159888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127496490).

87159888 is an abundant number, since it is smaller than the sum of its proper divisors (167833092).

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

87159888 is a wasteful number, since it uses less digits than its factorization.

87159888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746 (or 731 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 54.

The square root of 87159888 is about 9335.9460152681. The cubic root of 87159888 is about 443.3760410110.

The spelling of 87159888 in words is "eighty-seven million, one hundred fifty-nine thousand, eight hundred eighty-eight".