22458402 has 18 divisors (see below), whose sum is σ = 48703473. Its totient is φ = 7479432.

The previous prime is 22458391. The next prime is 22458407. The reversal of 22458402 is 20485422.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15848361 + 6610041 = 3981^2 + 2571^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=3351.

It is not an unprimeable number, because it can be changed into a prime (22458407) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 19548 + ... + 20664.

Almost surely, 2^22458402 is an apocalyptic number.

22458402 is an abundant number, since it is smaller than the sum of its proper divisors (26245071).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22458402 is an equidigital number, since it uses as much as digits as its factorization.

22458402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2242 (or 1122 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 22458402 is about 4739.0296475122. The cubic root of 22458402 is about 282.1367225957.

The spelling of 22458402 in words is "twenty-two million, four hundred fifty-eight thousand, four hundred two".