22543434 has 40 divisors (see below), whose sum is σ = 51893028. Its totient is φ = 7309440.

The previous prime is 22543429. The next prime is 22543441. The reversal of 22543434 is 43434522.

22543434 is a `hidden beast` number, since 225 + 4 + 3 + 434 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21650409 + 893025 = 4653^2 + 945^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 22543398 and 22543407.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4114 + ... + 7874.

Almost surely, 2^22543434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22543434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25946514).

22543434 is an abundant number, since it is smaller than the sum of its proper divisors (29349594).

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

22543434 is a wasteful number, since it uses less digits than its factorization.

22543434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3812 (or 3803 counting only the distinct ones).

The product of its digits is 11520, while the sum is 27.

The square root of 22543434 is about 4747.9926284694. The cubic root of 22543434 is about 282.4923494939.

Adding to 22543434 its reverse (43434522), we get a palindrome (65977956).

The spelling of 22543434 in words is "twenty-two million, five hundred forty-three thousand, four hundred thirty-four".