22446890 has 8 divisors (see below), whose sum is σ = 40404420. Its totient is φ = 8978752.

The previous prime is 22446889. The next prime is 22446913. The reversal of 22446890 is 9864422.

It can be written as a sum of positive squares in 2 ways, for example, as 21836929 + 609961 = 4673^2 + 781^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 22446890.

It is an unprimeable number.

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, 1122335 + ... + 1122354.

Almost surely, 2^22446890 is an apocalyptic number.

22446890 is a deficient number, since it is larger than the sum of its proper divisors (17957530).

22446890 is a wasteful number, since it uses less digits than its factorization.

22446890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244696.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 22446890 is about 4737.8148971863. The cubic root of 22446890 is about 282.0885073358.

The spelling of 22446890 in words is "twenty-two million, four hundred forty-six thousand, eight hundred ninety".