90018328 has 32 divisors (see below), whose sum is σ = 171531360. Its totient is φ = 44282880.

The previous prime is 90018323. The next prime is 90018337. The reversal of 90018328 is 82381009.

It is a self number, because there is not a number n which added to its sum of digits gives 90018328.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90018323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241150 + ... + 241522.

It is an arithmetic number, because the mean of its divisors is an integer number (5360355).

Almost surely, 2^90018328 is an apocalyptic number.

It is an amenable number.

90018328 is a deficient number, since it is larger than the sum of its proper divisors (81513032).

90018328 is a wasteful number, since it uses less digits than its factorization.

90018328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787 (or 783 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 90018328 is about 9487.7989017474. The cubic root of 90018328 is about 448.1708930303.

The spelling of 90018328 in words is "ninety million, eighteen thousand, three hundred twenty-eight".