22250090 has 8 divisors (see below), whose sum is σ = 40050180. Its totient is φ = 8900032.

The previous prime is 22250087. The next prime is 22250099. The reversal of 22250090 is 9005222.

It is a Cunningham number, because it is equal to 4717²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 22250089 + 1 = 4717^2 + 1^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (22250099) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1112495 + ... + 1112514.

Almost surely, 2^22250090 is an apocalyptic number.

22250090 is a deficient number, since it is larger than the sum of its proper divisors (17800090).

22250090 is a wasteful number, since it uses less digits than its factorization.

22250090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2225016.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 22250090 is about 4717.0001059996. Note that the first 3 decimals coincide. The cubic root of 22250090 is about 281.2616956453.

The spelling of 22250090 in words is "twenty-two million, two hundred fifty thousand, ninety".