22007412 has 72 divisors (see below), whose sum is σ = 66358656. Its totient is φ = 6012864.

The previous prime is 22007411. The next prime is 22007417. The reversal of 22007412 is 21470022.

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 (22007411) 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, 3898 + ... + 7694.

It is an arithmetic number, because the mean of its divisors is an integer number (921648).

Almost surely, 2^22007412 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 22007412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33179328).

22007412 is an abundant number, since it is smaller than the sum of its proper divisors (44351244).

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

22007412 is a wasteful number, since it uses less digits than its factorization.

22007412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3837 (or 3832 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 22007412 is about 4691.2058151396. The cubic root of 22007412 is about 280.2353972831.

Adding to 22007412 its reverse (21470022), we get a palindrome (43477434).

The spelling of 22007412 in words is "twenty-two million, seven thousand, four hundred twelve".