87704136 has 48 divisors (see below), whose sum is σ = 255806460. Its totient is φ = 26985600.

The previous prime is 87704131. The next prime is 87704147. The reversal of 87704136 is 63140778.

It can be written as a sum of positive squares in 2 ways, for example, as 86601636 + 1102500 = 9306^2 + 1050^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 87704136.

It is not an unprimeable number, because it can be changed into a prime (87704131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45915 + ... + 47786.

Almost surely, 2^87704136 is an apocalyptic number.

It is an amenable number.

87704136 is an abundant number, since it is smaller than the sum of its proper divisors (168102324).

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

87704136 is a wasteful number, since it uses less digits than its factorization.

87704136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93726 (or 93719 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 87704136 is about 9365.0486384215. The cubic root of 87704136 is about 444.2969768717.

The spelling of 87704136 in words is "eighty-seven million, seven hundred four thousand, one hundred thirty-six".