22458890 has 8 divisors (see below), whose sum is σ = 40426020. Its totient is φ = 8983552.

The previous prime is 22458859. The next prime is 22458899. The reversal of 22458890 is 9885422.

It can be written as a sum of positive squares in 2 ways, for example, as 19971961 + 2486929 = 4469^2 + 1577^2 .

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 (22458899) 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, 1122935 + ... + 1122954.

Almost surely, 2^22458890 is an apocalyptic number.

22458890 is a deficient number, since it is larger than the sum of its proper divisors (17967130).

22458890 is a wasteful number, since it uses less digits than its factorization.

22458890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2245896.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 22458890 is about 4739.0811345661. The cubic root of 22458890 is about 282.1387661030.

The spelling of 22458890 in words is "twenty-two million, four hundred fifty-eight thousand, eight hundred ninety".