87143808 has 32 divisors (see below), whose sum is σ = 231476760. Its totient is φ = 29047808.

The previous prime is 87143801. The next prime is 87143809. The reversal of 87143808 is 80834178.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87143801) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 113085 + ... + 113852.

Almost surely, 2^87143808 is an apocalyptic number.

It is an amenable number.

87143808 is an abundant number, since it is smaller than the sum of its proper divisors (144332952).

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

87143808 is a wasteful number, since it uses less digits than its factorization.

87143808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226954 (or 226942 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 87143808 is about 9335.0847880456. The cubic root of 87143808 is about 443.3487734021.

The spelling of 87143808 in words is "eighty-seven million, one hundred forty-three thousand, eight hundred eight".