22434240 has 56 divisors (see below), whose sum is σ = 71231760. Its totient is φ = 5982208.

The previous prime is 22434239. The next prime is 22434241. The reversal of 22434240 is 4243422.

It is an interprime number because it is at equal distance from previous prime (22434239) and next prime (22434241).

It is a super-3 number, since 3×22434240³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22434241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10725 + ... + 12644.

Almost surely, 2^22434240 is an apocalyptic number.

22434240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22434240 is an abundant number, since it is smaller than the sum of its proper divisors (48797520).

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

22434240 is a wasteful number, since it uses less digits than its factorization.

22434240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23389 (or 23379 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 22434240 is about 4736.4797054353. The cubic root of 22434240 is about 282.0355068213.

Adding to 22434240 its reverse (4243422), we get a palindrome (26677662).

The spelling of 22434240 in words is "twenty-two million, four hundred thirty-four thousand, two hundred forty".