87445144 has 64 divisors (see below), whose sum is σ = 187228800. Its totient is φ = 38029824.

The previous prime is 87445123. The next prime is 87445153. The reversal of 87445144 is 44154478.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 110719 + ... + 111505.

It is an arithmetic number, because the mean of its divisors is an integer number (2925450).

Almost surely, 2^87445144 is an apocalyptic number.

It is an amenable number.

87445144 is an abundant number, since it is smaller than the sum of its proper divisors (99783656).

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

87445144 is a wasteful number, since it uses less digits than its factorization.

87445144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872 (or 868 counting only the distinct ones).

The product of its digits is 71680, while the sum is 37.

The square root of 87445144 is about 9351.2108306893. The cubic root of 87445144 is about 443.8592065018.

The spelling of 87445144 in words is "eighty-seven million, four hundred forty-five thousand, one hundred forty-four".