87512136 has 16 divisors (see below), whose sum is σ = 218780400. Its totient is φ = 29170704.

The previous prime is 87512083. The next prime is 87512143. The reversal of 87512136 is 63121578.

It is a junction number, because it is equal to n+sod(n) for n = 87512097 and 87512106.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1823146 + ... + 1823193.

It is an arithmetic number, because the mean of its divisors is an integer number (13673775).

Almost surely, 2^87512136 is an apocalyptic number.

It is an amenable number.

87512136 is an abundant number, since it is smaller than the sum of its proper divisors (131268264).

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

87512136 is a wasteful number, since it uses less digits than its factorization.

87512136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3646348 (or 3646344 counting only the distinct ones).

The product of its digits is 10080, while the sum is 33.

The square root of 87512136 is about 9354.7921409297. The cubic root of 87512136 is about 443.9725248805.

The spelling of 87512136 in words is "eighty-seven million, five hundred twelve thousand, one hundred thirty-six".