90209022 has 16 divisors (see below), whose sum is σ = 180711552. Its totient is φ = 30020760.

The previous prime is 90209011. The next prime is 90209023. The reversal of 90209022 is 22090209.

It is a junction number, because it is equal to n+sod(n) for n = 90208983 and 90209001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90209023) 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, 8128 + ... + 15699.

It is an arithmetic number, because the mean of its divisors is an integer number (11294472).

Almost surely, 2^90209022 is an apocalyptic number.

90209022 is an abundant number, since it is smaller than the sum of its proper divisors (90502530).

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

90209022 is a wasteful number, since it uses less digits than its factorization.

90209022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24463.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 90209022 is about 9497.8430182858. The cubic root of 90209022 is about 448.4871368617.

The spelling of 90209022 in words is "ninety million, two hundred nine thousand, twenty-two".