87085782 has 48 divisors (see below), whose sum is σ = 223086240. Its totient is φ = 24022656.

The previous prime is 87085771. The next prime is 87085807. The reversal of 87085782 is 28758078.

It is a happy number.

87085782 is a `hidden beast` number, since 8 + 70 + 8 + 578 + 2 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8263 + ... + 15570.

It is an arithmetic number, because the mean of its divisors is an integer number (4647630).

Almost surely, 2^87085782 is an apocalyptic number.

87085782 is an abundant number, since it is smaller than the sum of its proper divisors (136000458).

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

87085782 is a wasteful number, since it uses less digits than its factorization.

87085782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23877 (or 23874 counting only the distinct ones).

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

The square root of 87085782 is about 9331.9763180154. The cubic root of 87085782 is about 443.2503480958.

The spelling of 87085782 in words is "eighty-seven million, eighty-five thousand, seven hundred eighty-two".