22004430 has 48 divisors (see below), whose sum is σ = 61436880. Its totient is φ = 5029248.

The previous prime is 22004429. The next prime is 22004431. The reversal of 22004430 is 3440022.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22004429) and next prime (22004431).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22004431) 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, 6015 + ... + 8954.

It is an arithmetic number, because the mean of its divisors is an integer number (1279935).

Almost surely, 2^22004430 is an apocalyptic number.

22004430 is an abundant number, since it is smaller than the sum of its proper divisors (39432450).

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

22004430 is a wasteful number, since it uses less digits than its factorization.

22004430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14993 (or 14986 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 22004430 is about 4690.8879756396. The cubic root of 22004430 is about 280.2227394309. Note that the first 3 decimals are identical.

Adding to 22004430 its reverse (3440022), we get a palindrome (25444452).

The spelling of 22004430 in words is "twenty-two million, four thousand, four hundred thirty".