87812168 has 24 divisors (see below), whose sum is σ = 168259350. Its totient is φ = 42963264.

The previous prime is 87812147. The next prime is 87812173. The reversal of 87812168 is 86121878.

It can be written as a sum of positive squares in only one way, i.e., 83137924 + 4674244 = 9118^2 + 2162^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

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 5 ways as a sum of consecutive naturals, for example, 15188 + ... + 20156.

Almost surely, 2^87812168 is an apocalyptic number.

It is an amenable number.

87812168 is a deficient number, since it is larger than the sum of its proper divisors (80447182).

87812168 is a wasteful number, since it uses less digits than its factorization.

87812168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5069 (or 5018 counting only the distinct ones).

The product of its digits is 43008, while the sum is 41.

The square root of 87812168 is about 9370.8146924374. The cubic root of 87812168 is about 444.4793270584.

The spelling of 87812168 in words is "eighty-seven million, eight hundred twelve thousand, one hundred sixty-eight".