22240090 has 8 divisors (see below), whose sum is σ = 40032180. Its totient is φ = 8896032.

The previous prime is 22240087. The next prime is 22240093. The reversal of 22240090 is 9004222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22240087) and next prime (22240093).

It can be written as a sum of positive squares in 2 ways, for example, as 21911761 + 328329 = 4681^2 + 573^2 .

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 (22240093) 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, 1111995 + ... + 1112014.

Almost surely, 2^22240090 is an apocalyptic number.

22240090 is a deficient number, since it is larger than the sum of its proper divisors (17792090).

22240090 is a wasteful number, since it uses less digits than its factorization.

22240090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224016.

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

The square root of 22240090 is about 4715.9399911364. The cubic root of 22240090 is about 281.2195529180.

The spelling of 22240090 in words is "twenty-two million, two hundred forty thousand, ninety".