22434040 has 32 divisors (see below), whose sum is σ = 51554880. Its totient is φ = 8781952.

The previous prime is 22434017. The next prime is 22434047. The reversal of 22434040 is 4043422.

It is a junction number, because it is equal to n+sod(n) for n = 22433999 and 22434017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22434047) 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, 4087 + ... + 7846.

It is an arithmetic number, because the mean of its divisors is an integer number (1611090).

Almost surely, 2^22434040 is an apocalyptic number.

22434040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22434040 is an abundant number, since it is smaller than the sum of its proper divisors (29120840).

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

22434040 is a wasteful number, since it uses less digits than its factorization.

22434040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11991 (or 11987 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 22434040 is about 4736.4585926618. The cubic root of 22434040 is about 282.0346687085.

Adding to 22434040 its reverse (4043422), we get a palindrome (26477462).

The spelling of 22434040 in words is "twenty-two million, four hundred thirty-four thousand, forty".