22398768 has 120 divisors (see below), whose sum is σ = 74384128. Its totient is φ = 6391872.

The previous prime is 22398767. The next prime is 22398793. The reversal of 22398768 is 86789322.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22398763) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26805 + ... + 27627.

Almost surely, 2^22398768 is an apocalyptic number.

22398768 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22398768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37192064).

22398768 is an abundant number, since it is smaller than the sum of its proper divisors (51985360).

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

22398768 is an equidigital number, since it uses as much as digits as its factorization.

22398768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853 (or 835 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 22398768 is about 4732.7336709348. The cubic root of 22398768 is about 281.8867811688.

The spelling of 22398768 in words is "twenty-two million, three hundred ninety-eight thousand, seven hundred sixty-eight".