22643450 has 12 divisors (see below), whose sum is σ = 42116910. Its totient is φ = 9057360.

The previous prime is 22643449. The next prime is 22643503. The reversal of 22643450 is 5434622.

It can be written as a sum of positive squares in 3 ways, for example, as 21409129 + 1234321 = 4627^2 + 1111^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 226385 + ... + 226484.

Almost surely, 2^22643450 is an apocalyptic number.

22643450 is a deficient number, since it is larger than the sum of its proper divisors (19473460).

22643450 is a wasteful number, since it uses less digits than its factorization.

22643450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452881 (or 452876 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 22643450 is about 4758.5134233288. The cubic root of 22643450 is about 282.9095008776.

The spelling of 22643450 in words is "twenty-two million, six hundred forty-three thousand, four hundred fifty".