22421898 has 24 divisors (see below), whose sum is σ = 48859200. Its totient is φ = 7431144.

The previous prime is 22421891. The next prime is 22421911. The reversal of 22421898 is 89812422.

It is not an unprimeable number, because it can be changed into a prime (22421891) 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, 258 + ... + 6701.

It is an arithmetic number, because the mean of its divisors is an integer number (2035800).

Almost surely, 2^22421898 is an apocalyptic number.

22421898 is an abundant number, since it is smaller than the sum of its proper divisors (26437302).

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

22421898 is a wasteful number, since it uses less digits than its factorization.

22421898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7146 (or 7143 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 22421898 is about 4735.1766598512. The cubic root of 22421898 is about 281.9837775488.

It can be divided in two parts, 224 and 21898, that added together give a palindrome (22122).

The spelling of 22421898 in words is "twenty-two million, four hundred twenty-one thousand, eight hundred ninety-eight".