22398492 has 48 divisors (see below), whose sum is σ = 56806400. Its totient is φ = 6842880.

The previous prime is 22398479. The next prime is 22398533. The reversal of 22398492 is 29489322.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22398492.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5484 + ... + 8652.

Almost surely, 2^22398492 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22398492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28403200).

22398492 is an abundant number, since it is smaller than the sum of its proper divisors (34407908).

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

22398492 is a wasteful number, since it uses less digits than its factorization.

22398492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3226 (or 3224 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 22398492 is about 4732.7045122213. The cubic root of 22398492 is about 281.8856233511.

It can be divided in two parts, 2239 and 8492, that added together give a triangular number (10731 = T₁₄₆).

The spelling of 22398492 in words is "twenty-two million, three hundred ninety-eight thousand, four hundred ninety-two".