90105318 has 16 divisors (see below), whose sum is σ = 200234160. Its totient is φ = 30035088.

The previous prime is 90105307. The next prime is 90105347. The reversal of 90105318 is 81350109.

It is a super-2 number, since 2×90105318² = 16237936663762248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 90105291 and 90105300.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 834255 + ... + 834362.

It is an arithmetic number, because the mean of its divisors is an integer number (12514635).

Almost surely, 2^90105318 is an apocalyptic number.

90105318 is an abundant number, since it is smaller than the sum of its proper divisors (110128842).

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

90105318 is a wasteful number, since it uses less digits than its factorization.

90105318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668628 (or 1668622 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 90105318 is about 9492.3821035607. The cubic root of 90105318 is about 448.3152111757.

The spelling of 90105318 in words is "ninety million, one hundred five thousand, three hundred eighteen".