22272450 has 24 divisors (see below), whose sum is σ = 55236048. Its totient is φ = 5939280.

The previous prime is 22272443. The next prime is 22272451. The reversal of 22272450 is 5427222.

It is a self number, because there is not a number n which added to its sum of digits gives 22272450.

It is not an unprimeable number, because it can be changed into a prime (22272451) 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 11 ways as a sum of consecutive naturals, for example, 74092 + ... + 74391.

It is an arithmetic number, because the mean of its divisors is an integer number (2301502).

Almost surely, 2^22272450 is an apocalyptic number.

22272450 is an abundant number, since it is smaller than the sum of its proper divisors (32963598).

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

22272450 is a wasteful number, since it uses less digits than its factorization.

22272450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148498 (or 148493 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 22272450 is about 4719.3696613001. The cubic root of 22272450 is about 281.3558811220.

Adding to 22272450 its reverse (5427222), we get a palindrome (27699672).

It can be divided in two parts, 22272 and 450, that added together give a palindrome (22722).

The spelling of 22272450 in words is "twenty-two million, two hundred seventy-two thousand, four hundred fifty".