90993184 has 48 divisors (see below), whose sum is σ = 191358720. Its totient is φ = 42497280.

The previous prime is 90993181. The next prime is 90993193. The reversal of 90993184 is 48139909.

It is a self number, because there is not a number n which added to its sum of digits gives 90993184.

It is not an unprimeable number, because it can be changed into a prime (90993181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27187 + ... + 30349.

It is an arithmetic number, because the mean of its divisors is an integer number (3986640).

Almost surely, 2^90993184 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90993184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95679360).

90993184 is an abundant number, since it is smaller than the sum of its proper divisors (100365536).

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

90993184 is a wasteful number, since it uses less digits than its factorization.

90993184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3233 (or 3225 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 90993184 is about 9539.0347520071. The cubic root of 90993184 is about 449.7829142219.

The spelling of 90993184 in words is "ninety million, nine hundred ninety-three thousand, one hundred eighty-four".