22344340 has 24 divisors (see below), whose sum is σ = 47454120. Its totient is φ = 8836608.

The previous prime is 22344313. The next prime is 22344359. The reversal of 22344340 is 4344322.

It can be written as a sum of positive squares in 4 ways, for example, as 5550736 + 16793604 = 2356^2 + 4098^2 .

It is a congruent number.

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, 4497 + ... + 8056.

It is an arithmetic number, because the mean of its divisors is an integer number (1977255).

Almost surely, 2^22344340 is an apocalyptic number.

22344340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22344340 is an abundant number, since it is smaller than the sum of its proper divisors (25109780).

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

22344340 is a wasteful number, since it uses less digits than its factorization.

22344340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12651 (or 12649 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 22344340 is about 4726.9800084198. The cubic root of 22344340 is about 281.6582719080.

Adding to 22344340 its reverse (4344322), we get a palindrome (26688662).

The spelling of 22344340 in words is "twenty-two million, three hundred forty-four thousand, three hundred forty".