90422200 has 96 divisors (see below), whose sum is σ = 239448960. Its totient is φ = 31433600.

The previous prime is 90422183. The next prime is 90422207. The reversal of 90422200 is 222409.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90422207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49707 + ... + 51493.

It is an arithmetic number, because the mean of its divisors is an integer number (2494260).

Almost surely, 2^90422200 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 90422200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119724480).

90422200 is an abundant number, since it is smaller than the sum of its proper divisors (149026760).

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

90422200 is a wasteful number, since it uses less digits than its factorization.

90422200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1837 (or 1828 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 90422200 is about 9509.0588388126. The cubic root of 90422200 is about 448.8401406433.

Adding to 90422200 its reverse (222409), we get a palindrome (90644609).

It can be divided in two parts, 904 and 22200, that added together give a square (23104 = 152²).

The spelling of 90422200 in words is "ninety million, four hundred twenty-two thousand, two hundred".