22002272 has 24 divisors (see below), whose sum is σ = 44490096. Its totient is φ = 10703232.

The previous prime is 22002269. The next prime is 22002289. The reversal of 22002272 is 27220022.

It is a self number, because there is not a number n which added to its sum of digits gives 22002272.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8108 + ... + 10475.

It is an arithmetic number, because the mean of its divisors is an integer number (1853754).

Almost surely, 2^22002272 is an apocalyptic number.

It is an amenable number.

22002272 is an abundant number, since it is smaller than the sum of its proper divisors (22487824).

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

22002272 is a wasteful number, since it uses less digits than its factorization.

22002272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18630 (or 18622 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 22002272 is about 4690.6579495845. The cubic root of 22002272 is about 280.2135785416.

Adding to 22002272 its reverse (27220022), we get a palindrome (49222294).

The spelling of 22002272 in words is "twenty-two million, two thousand, two hundred seventy-two".