90105344 has 80 divisors (see below), whose sum is σ = 212653056. Its totient is φ = 37324800.

The previous prime is 90105307. The next prime is 90105347. The reversal of 90105344 is 44350109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90105347) 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, 110699 + ... + 111509.

Almost surely, 2^90105344 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 90105344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106326528).

90105344 is an abundant number, since it is smaller than the sum of its proper divisors (122547712).

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

90105344 is an equidigital number, since it uses as much as digits as its factorization.

90105344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867 (or 851 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 90105344 is about 9492.3834730799. The cubic root of 90105344 is about 448.3152542963.

The spelling of 90105344 in words is "ninety million, one hundred five thousand, three hundred forty-four".