87000004 has 48 divisors (see below), whose sum is σ = 188153728. Its totient is φ = 34276608.

The previous prime is 86999989. The next prime is 87000037. The reversal of 87000004 is 40000078.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166087 + ... + 166609.

Almost surely, 2^87000004 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 87000004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94076864).

87000004 is an abundant number, since it is smaller than the sum of its proper divisors (101153724).

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

87000004 is a wasteful number, since it uses less digits than its factorization.

87000004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004 (or 1002 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 87000004 is about 9327.3792675113. The cubic root of 87000004 is about 443.1047689602.

The spelling of 87000004 in words is "eighty-seven million, four", and thus it is an aban number.