22431602 has 18 divisors (see below), whose sum is σ = 35925447. Its totient is φ = 10502464.

The previous prime is 22431599. The next prime is 22431637. The reversal of 22431602 is 20613422.

It can be written as a sum of positive squares in 5 ways, for example, as 21911761 + 519841 = 4681^2 + 721^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=3349.

It is a Duffinian number.

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 8 ways as a sum of consecutive naturals, for example, 113768 + ... + 113964.

Almost surely, 2^22431602 is an apocalyptic number.

22431602 is a deficient number, since it is larger than the sum of its proper divisors (13493845).

22431602 is an equidigital number, since it uses as much as digits as its factorization.

22431602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 22431602 is about 4736.2012203875. The cubic root of 22431602 is about 282.0244517134.

The spelling of 22431602 in words is "twenty-two million, four hundred thirty-one thousand, six hundred two".