22407372 has 108 divisors (see below), whose sum is σ = 63947520. Its totient is φ = 6604416.

The previous prime is 22407367. The next prime is 22407373. The reversal of 22407372 is 27370422.

It is not an unprimeable number, because it can be changed into a prime (22407373) 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 35 ways as a sum of consecutive naturals, for example, 176373 + ... + 176499.

Almost surely, 2^22407372 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 22407372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31973760).

22407372 is an abundant number, since it is smaller than the sum of its proper divisors (41540148).

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

22407372 is a wasteful number, since it uses less digits than its factorization.

22407372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 22407372 is about 4733.6425720580. The cubic root of 22407372 is about 281.9228701088.

Adding to 22407372 its reverse (27370422), we get a palindrome (49777794).

The spelling of 22407372 in words is "twenty-two million, four hundred seven thousand, three hundred seventy-two".