22007428 has 24 divisors (see below), whose sum is σ = 39213720. Its totient is φ = 10805760.

The previous prime is 22007417. The next prime is 22007437. The reversal of 22007428 is 82470022.

It can be written as a sum of positive squares in 4 ways, for example, as 5750404 + 16257024 = 2398^2 + 4032^2 .

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 7 ways as a sum of consecutive naturals, for example, 81678 + ... + 81946.

It is an arithmetic number, because the mean of its divisors is an integer number (1633905).

Almost surely, 2^22007428 is an apocalyptic number.

It is an amenable number.

22007428 is a deficient number, since it is larger than the sum of its proper divisors (17206292).

22007428 is a wasteful number, since it uses less digits than its factorization.

22007428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567 (or 565 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 22007428 is about 4691.2075204578. The cubic root of 22007428 is about 280.2354651960.

The spelling of 22007428 in words is "twenty-two million, seven thousand, four hundred twenty-eight".