90845226 has 80 divisors (see below), whose sum is σ = 214707240. Its totient is φ = 28667520.

The previous prime is 90845203. The next prime is 90845231. The reversal of 90845226 is 62254809.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 30239001 + 60606225 = 5499^2 + 7785^2 .

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 286420 + ... + 286736.

Almost surely, 2^90845226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90845226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107353620).

90845226 is an abundant number, since it is smaller than the sum of its proper divisors (123862014).

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

90845226 is a wasteful number, since it uses less digits than its factorization.

90845226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421 (or 412 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 90845226 is about 9531.2761999640. The cubic root of 90845226 is about 449.5389945479.

The spelling of 90845226 in words is "ninety million, eight hundred forty-five thousand, two hundred twenty-six".