22454340 has 24 divisors (see below), whose sum is σ = 62872320. Its totient is φ = 5987808.

The previous prime is 22454339. The next prime is 22454357. The reversal of 22454340 is 4345422.

It is a self number, because there is not a number n which added to its sum of digits gives 22454340.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187060 + ... + 187179.

It is an arithmetic number, because the mean of its divisors is an integer number (2619680).

Almost surely, 2^22454340 is an apocalyptic number.

22454340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22454340 is an abundant number, since it is smaller than the sum of its proper divisors (40417980).

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

22454340 is a wasteful number, since it uses less digits than its factorization.

22454340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374251 (or 374249 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 22454340 is about 4738.6010593845. The cubic root of 22454340 is about 282.1197117614.

Adding to 22454340 its reverse (4345422), we get a palindrome (26799762).

The spelling of 22454340 in words is "twenty-two million, four hundred fifty-four thousand, three hundred forty".