87319424 has 16 divisors (see below), whose sum is σ = 173956920. Its totient is φ = 43659648.

The previous prime is 87319391. The next prime is 87319433. The reversal of 87319424 is 42491378.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340964 + ... + 341219.

Almost surely, 2^87319424 is an apocalyptic number.

It is an amenable number.

87319424 is a deficient number, since it is larger than the sum of its proper divisors (86637496).

87319424 is an equidigital number, since it uses as much as digits as its factorization.

87319424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682197 (or 682185 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The square root of 87319424 is about 9344.4862887159. The cubic root of 87319424 is about 443.6463921572.

The spelling of 87319424 in words is "eighty-seven million, three hundred nineteen thousand, four hundred twenty-four".