22435898 has 4 divisors (see below), whose sum is σ = 33653850. Its totient is φ = 11217948.

The previous prime is 22435891. The next prime is 22435901. The reversal of 22435898 is 89853422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89853422 = 2 ⋅44926711.

It can be written as a sum of positive squares in only one way, i.e., 20313049 + 2122849 = 4507^2 + 1457^2 .

It is not an unprimeable number, because it can be changed into a prime (22435891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5608973 + ... + 5608976.

Almost surely, 2^22435898 is an apocalyptic number.

22435898 is a deficient number, since it is larger than the sum of its proper divisors (11217952).

22435898 is a wasteful number, since it uses less digits than its factorization.

22435898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11217951.

The product of its digits is 138240, while the sum is 41.

The square root of 22435898 is about 4736.6547267032. The cubic root of 22435898 is about 282.0424545844.

The spelling of 22435898 in words is "twenty-two million, four hundred thirty-five thousand, eight hundred ninety-eight".