87267285 has 72 divisors (see below), whose sum is σ = 185309280. Its totient is φ = 37775808.

The previous prime is 87267281. The next prime is 87267319. The reversal of 87267285 is 58276278.

It is not a de Polignac number, because 87267285 - 2² = 87267281 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 87267285.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87267281) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 40854 + ... + 42936.

It is an arithmetic number, because the mean of its divisors is an integer number (2573740).

Almost surely, 2^87267285 is an apocalyptic number.

It is an amenable number.

87267285 is an abundant number, since it is smaller than the sum of its proper divisors (98041995).

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

87267285 is a wasteful number, since it uses less digits than its factorization.

87267285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2127 (or 2117 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The square root of 87267285 is about 9341.6960451515. The cubic root of 87267285 is about 443.5580731874.

The spelling of 87267285 in words is "eighty-seven million, two hundred sixty-seven thousand, two hundred eighty-five".