22698240 has 144 divisors (see below), whose sum is σ = 75938688. Its totient is φ = 5767168.

The previous prime is 22698229. The next prime is 22698241. The reversal of 22698240 is 4289622.

It is not an unprimeable number, because it can be changed into a prime (22698241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88192 + ... + 88448.

It is an arithmetic number, because the mean of its divisors is an integer number (527352).

Almost surely, 2^22698240 is an apocalyptic number.

22698240 is a gapful number since it is divisible by the number (20) 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 22698240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37969344).

22698240 is an abundant number, since it is smaller than the sum of its proper divisors (53240448).

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

22698240 is a wasteful number, since it uses less digits than its factorization.

22698240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304 (or 290 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 22698240 is about 4764.2669950371. The cubic root of 22698240 is about 283.1375009709.

The spelling of 22698240 in words is "twenty-two million, six hundred ninety-eight thousand, two hundred forty".