22400430 has 64 divisors (see below), whose sum is σ = 60963840. Its totient is φ = 5222016.

The previous prime is 22400423. The next prime is 22400431. The reversal of 22400430 is 3400422.

It is a happy number.

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 (22400431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5899 + ... + 8921.

It is an arithmetic number, because the mean of its divisors is an integer number (952560).

Almost surely, 2^22400430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22400430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30481920).

22400430 is an abundant number, since it is smaller than the sum of its proper divisors (38563410).

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

22400430 is a wasteful number, since it uses less digits than its factorization.

22400430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3065.

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

The square root of 22400430 is about 4732.9092533029. The cubic root of 22400430 is about 281.8937530439.

Adding to 22400430 its reverse (3400422), we get a palindrome (25800852).

The spelling of 22400430 in words is "twenty-two million, four hundred thousand, four hundred thirty".