22535428 has 18 divisors (see below), whose sum is σ = 40009578. Its totient is φ = 11105280.

The previous prime is 22535417. The next prime is 22535431. The reversal of 22535428 is 82453522.

It can be written as a sum of positive squares in 3 ways, for example, as 7851204 + 14684224 = 2802^2 + 3832^2 .

It is a super-3 number, since 3×22535428³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22535428.

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, 93388 + ... + 93628.

Almost surely, 2^22535428 is an apocalyptic number.

It is an amenable number.

22535428 is a deficient number, since it is larger than the sum of its proper divisors (17474150).

22535428 is an equidigital number, since it uses as much as digits as its factorization.

22535428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583 (or 340 counting only the distinct ones).

The product of its digits is 19200, while the sum is 31.

The square root of 22535428 is about 4747.1494604657. The cubic root of 22535428 is about 282.4589044040.

It can be divided in two parts, 225 and 35428, that added together give a palindrome (35653).

The spelling of 22535428 in words is "twenty-two million, five hundred thirty-five thousand, four hundred twenty-eight".