90321516 has 36 divisors (see below), whose sum is σ = 240331000. Its totient is φ = 28522368.

The previous prime is 90321509. The next prime is 90321533. The reversal of 90321516 is 61512309.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 90321516.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65341 + ... + 66708.

Almost surely, 2^90321516 is an apocalyptic number.

It is an amenable number.

90321516 is an abundant number, since it is smaller than the sum of its proper divisors (150009484).

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

90321516 is a wasteful number, since it uses less digits than its factorization.

90321516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132078 (or 132073 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 90321516 is about 9503.7632546271. The cubic root of 90321516 is about 448.6734861259.

The spelling of 90321516 in words is "ninety million, three hundred twenty-one thousand, five hundred sixteen".