90085236 has 12 divisors (see below), whose sum is σ = 210198912. Its totient is φ = 30028408.

The previous prime is 90085231. The next prime is 90085253. The reversal of 90085236 is 63258009.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 90085197 and 90085206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90085231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3753540 + ... + 3753563.

It is an arithmetic number, because the mean of its divisors is an integer number (17516576).

Almost surely, 2^90085236 is an apocalyptic number.

It is an amenable number.

90085236 is an abundant number, since it is smaller than the sum of its proper divisors (120113676).

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

90085236 is a wasteful number, since it uses less digits than its factorization.

90085236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7507110 (or 7507108 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 90085236 is about 9491.3242490182. The cubic root of 90085236 is about 448.2819029863.

The spelling of 90085236 in words is "ninety million, eighty-five thousand, two hundred thirty-six".