90243104 has 72 divisors (see below), whose sum is σ = 210001680. Its totient is φ = 38054016.

The previous prime is 90243079. The next prime is 90243113. The reversal of 90243104 is 40134209.

It is a self number, because there is not a number n which added to its sum of digits gives 90243104.

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, 104627 + ... + 105485.

It is an arithmetic number, because the mean of its divisors is an integer number (2916690).

Almost surely, 2^90243104 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 90243104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105000840).

90243104 is an abundant number, since it is smaller than the sum of its proper divisors (119758576).

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

90243104 is a wasteful number, since it uses less digits than its factorization.

90243104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950 (or 935 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 90243104 is about 9499.6370456981. The cubic root of 90243104 is about 448.5436109396.

The spelling of 90243104 in words is "ninety million, two hundred forty-three thousand, one hundred four".