87885090 has 24 divisors (see below), whose sum is σ = 228501468. Its totient is φ = 23436000.

The previous prime is 87885073. The next prime is 87885107. The reversal of 87885090 is 9058878.

It is an interprime number because it is at equal distance from previous prime (87885073) and next prime (87885107).

It can be written as a sum of positive squares in 2 ways, for example, as 87778161 + 106929 = 9369^2 + 327^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 488161 + ... + 488340.

Almost surely, 2^87885090 is an apocalyptic number.

87885090 is an abundant number, since it is smaller than the sum of its proper divisors (140616378).

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

87885090 is a wasteful number, since it uses less digits than its factorization.

87885090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976514 (or 976511 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The square root of 87885090 is about 9374.7047953522. The cubic root of 87885090 is about 444.6023295773.

The spelling of 87885090 in words is "eighty-seven million, eight hundred eighty-five thousand, ninety".