90871584 has 24 divisors (see below), whose sum is σ = 238538160. Its totient is φ = 30290496.

The previous prime is 90871577. The next prime is 90871589. The reversal of 90871584 is 48517809.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (90871589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473194 + ... + 473385.

It is an arithmetic number, because the mean of its divisors is an integer number (9939090).

Almost surely, 2^90871584 is an apocalyptic number.

It is an amenable number.

90871584 is an abundant number, since it is smaller than the sum of its proper divisors (147666576).

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

90871584 is a wasteful number, since it uses less digits than its factorization.

90871584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946592 (or 946584 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 90871584 is about 9532.6588106362. The cubic root of 90871584 is about 449.5824670324.

The spelling of 90871584 in words is "ninety million, eight hundred seventy-one thousand, five hundred eighty-four".