87168136 has 16 divisors (see below), whose sum is σ = 178298640. Its totient is φ = 39621840.

The previous prime is 87168131. The next prime is 87168149. The reversal of 87168136 is 63186178.

It is not an unprimeable number, because it can be changed into a prime (87168131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 495186 + ... + 495361.

It is an arithmetic number, because the mean of its divisors is an integer number (11143665).

Almost surely, 2^87168136 is an apocalyptic number.

It is an amenable number.

87168136 is an abundant number, since it is smaller than the sum of its proper divisors (91130504).

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

87168136 is a wasteful number, since it uses less digits than its factorization.

87168136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990564 (or 990560 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 87168136 is about 9336.3877383065. The cubic root of 87168136 is about 443.3900262296.

It can be divided in two parts, 8716813 and 6, that multiplied together give a triangular number (52300878 = T₁₀₂₂₇).

The spelling of 87168136 in words is "eighty-seven million, one hundred sixty-eight thousand, one hundred thirty-six".