22445430 has 48 divisors (see below), whose sum is σ = 62668080. Its totient is φ = 5130048.

The previous prime is 22445419. The next prime is 22445431. The reversal of 22445430 is 3454422.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22445430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22445431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6165 + ... + 9104.

It is an arithmetic number, because the mean of its divisors is an integer number (1305585).

Almost surely, 2^22445430 is an apocalyptic number.

22445430 is an abundant number, since it is smaller than the sum of its proper divisors (40222650).

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

22445430 is a wasteful number, since it uses less digits than its factorization.

22445430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15293 (or 15286 counting only the distinct ones).

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

The square root of 22445430 is about 4737.6608152125. The cubic root of 22445430 is about 282.0823912970.

Adding to 22445430 its reverse (3454422), we get a palindrome (25899852).

It can be divided in two parts, 224 and 45430, that added together give a palindrome (45654).

The spelling of 22445430 in words is "twenty-two million, four hundred forty-five thousand, four hundred thirty".