22446428 has 24 divisors (see below), whose sum is σ = 40078080. Its totient is φ = 10998000.

The previous prime is 22446379. The next prime is 22446439. The reversal of 22446428 is 82464422.

It is a junction number, because it is equal to n+sod(n) for n = 22446394 and 22446403.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 79175 + ... + 79457.

It is an arithmetic number, because the mean of its divisors is an integer number (1669920).

Almost surely, 2^22446428 is an apocalyptic number.

It is an amenable number.

22446428 is a deficient number, since it is larger than the sum of its proper divisors (17631652).

22446428 is a wasteful number, since it uses less digits than its factorization.

22446428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617 (or 615 counting only the distinct ones).

The product of its digits is 24576, while the sum is 32.

The square root of 22446428 is about 4737.7661402817. The cubic root of 22446428 is about 282.0865720153.

The spelling of 22446428 in words is "twenty-two million, four hundred forty-six thousand, four hundred twenty-eight".