87181002 has 16 divisors (see below), whose sum is σ = 193735680. Its totient is φ = 29060316.

The previous prime is 87180997. The next prime is 87181013. The reversal of 87181002 is 20018178.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 807178 + ... + 807285.

It is an arithmetic number, because the mean of its divisors is an integer number (12108480).

Almost surely, 2^87181002 is an apocalyptic number.

87181002 is an abundant number, since it is smaller than the sum of its proper divisors (106554678).

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

87181002 is a wasteful number, since it uses less digits than its factorization.

87181002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614474 (or 1614468 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 87181002 is about 9337.0767373948. The cubic root of 87181002 is about 443.4118399170.

The spelling of 87181002 in words is "eighty-seven million, one hundred eighty-one thousand, two".