22421412 has 72 divisors (see below), whose sum is σ = 63720384. Its totient is φ = 6595776.

The previous prime is 22421411. The next prime is 22421423. The reversal of 22421412 is 21412422.

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

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (22421411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9723 + ... + 11805.

Almost surely, 2^22421412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22421412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31860192).

22421412 is an abundant number, since it is smaller than the sum of its proper divisors (41298972).

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

22421412 is a wasteful number, since it uses less digits than its factorization.

22421412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2129 (or 2124 counting only the distinct ones).

The product of its digits is 256, while the sum is 18.

The square root of 22421412 is about 4735.1253415300. The cubic root of 22421412 is about 281.9817401788.

Adding to 22421412 its reverse (21412422), we get a palindrome (43833834).

The spelling of 22421412 in words is "twenty-two million, four hundred twenty-one thousand, four hundred twelve".