22451372 has 12 divisors (see below), whose sum is σ = 39330480. Its totient is φ = 11214096.

The previous prime is 22451371. The next prime is 22451393. The reversal of 22451372 is 27315422.

It is not an unprimeable number, because it can be changed into a prime (22451371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2633 + ... + 7199.

It is an arithmetic number, because the mean of its divisors is an integer number (3277540).

Almost surely, 2^22451372 is an apocalyptic number.

It is an amenable number.

22451372 is a deficient number, since it is larger than the sum of its proper divisors (16879108).

22451372 is a wasteful number, since it uses less digits than its factorization.

22451372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5800 (or 5798 counting only the distinct ones).

The product of its digits is 3360, while the sum is 26.

The square root of 22451372 is about 4738.2878764381. The cubic root of 22451372 is about 282.1072810806.

Adding to 22451372 its reverse (27315422), we get a palindrome (49766794).

The spelling of 22451372 in words is "twenty-two million, four hundred fifty-one thousand, three hundred seventy-two".