22398450 has 24 divisors (see below), whose sum is σ = 55548528. Its totient is φ = 5972880.

The previous prime is 22398437. The next prime is 22398451. The reversal of 22398450 is 5489322.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22398451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74512 + ... + 74811.

It is an arithmetic number, because the mean of its divisors is an integer number (2314522).

Almost surely, 2^22398450 is an apocalyptic number.

22398450 is an abundant number, since it is smaller than the sum of its proper divisors (33150078).

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

22398450 is a wasteful number, since it uses less digits than its factorization.

22398450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149338 (or 149333 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 22398450 is about 4732.7000750100. The cubic root of 22398450 is about 281.8854471606.

The spelling of 22398450 in words is "twenty-two million, three hundred ninety-eight thousand, four hundred fifty".