22493090 has 8 divisors (see below), whose sum is σ = 40487580. Its totient is φ = 8997232.

The previous prime is 22493089. The next prime is 22493099. The reversal of 22493090 is 9039422.

It can be written as a sum of positive squares in 2 ways, for example, as 22458121 + 34969 = 4739^2 + 187^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22493099) 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, 1124645 + ... + 1124664.

Almost surely, 2^22493090 is an apocalyptic number.

22493090 is a deficient number, since it is larger than the sum of its proper divisors (17994490).

22493090 is a wasteful number, since it uses less digits than its factorization.

22493090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2249316.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 22493090 is about 4742.6880563663. The cubic root of 22493090 is about 282.2819054432.

The spelling of 22493090 in words is "twenty-two million, four hundred ninety-three thousand, ninety".