87285708 has 108 divisors (see below), whose sum is σ = 242172840. Its totient is φ = 27185760.

The previous prime is 87285707. The next prime is 87285727. The reversal of 87285708 is 80758278.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

87285708 is a `hidden beast` number, since 8 + 72 + 8 + 570 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (108).

It is a super-2 number, since 2×87285708² = 15237589642122528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87285707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2815653 + ... + 2815683.

Almost surely, 2^87285708 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 87285708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121086420).

87285708 is an abundant number, since it is smaller than the sum of its proper divisors (154887132).

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

87285708 is a wasteful number, since it uses less digits than its factorization.

87285708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 45.

The square root of 87285708 is about 9342.6820560265. The cubic root of 87285708 is about 443.5892841787.

The spelling of 87285708 in words is "eighty-seven million, two hundred eighty-five thousand, seven hundred eight".