87582490 has 16 divisors (see below), whose sum is σ = 157949640. Its totient is φ = 34966080.

The previous prime is 87582431. The next prime is 87582493. The reversal of 87582490 is 9428578.

It can be written as a sum of positive squares in 4 ways, for example, as 65464281 + 22118209 = 8091^2 + 4703^2 .

It is not an unprimeable number, because it can be changed into a prime (87582493) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2685 + ... + 13504.

Almost surely, 2^87582490 is an apocalyptic number.

87582490 is a deficient number, since it is larger than the sum of its proper divisors (70367150).

87582490 is a wasteful number, since it uses less digits than its factorization.

87582490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16737.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 87582490 is about 9358.5517041901. The cubic root of 87582490 is about 444.0914679125.

The spelling of 87582490 in words is "eighty-seven million, five hundred eighty-two thousand, four hundred ninety".