22421430 has 24 divisors (see below), whose sum is σ = 58295952. Its totient is φ = 5979024.

The previous prime is 22421429. The next prime is 22421431. The reversal of 22421430 is 3412422.

It is an interprime number because it is at equal distance from previous prime (22421429) and next prime (22421431).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22421431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124474 + ... + 124653.

It is an arithmetic number, because the mean of its divisors is an integer number (2428998).

Almost surely, 2^22421430 is an apocalyptic number.

22421430 is an abundant number, since it is smaller than the sum of its proper divisors (35874522).

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

22421430 is a wasteful number, since it uses less digits than its factorization.

22421430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249140 (or 249137 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 22421430 is about 4735.1272422185. The cubic root of 22421430 is about 281.9818156375.

Adding to 22421430 its reverse (3412422), we get a palindrome (25833852).

The spelling of 22421430 in words is "twenty-two million, four hundred twenty-one thousand, four hundred thirty".