87285944 has 8 divisors (see below), whose sum is σ = 163661160. Its totient is φ = 43642968.

The previous prime is 87285941. The next prime is 87285959. The reversal of 87285944 is 44958278.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×87285944² = 15237672039942272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87285941) 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 as a sum of consecutive naturals, namely, 5455364 + ... + 5455379.

It is an arithmetic number, because the mean of its divisors is an integer number (20457645).

Almost surely, 2^87285944 is an apocalyptic number.

It is an amenable number.

87285944 is a deficient number, since it is larger than the sum of its proper divisors (76375216).

87285944 is a wasteful number, since it uses less digits than its factorization.

87285944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10910749 (or 10910745 counting only the distinct ones).

The product of its digits is 645120, while the sum is 47.

The square root of 87285944 is about 9342.6946862241. The cubic root of 87285944 is about 443.5896839653.

The spelling of 87285944 in words is "eighty-seven million, two hundred eighty-five thousand, nine hundred forty-four".