22226997 has 16 divisors (see below), whose sum is σ = 32442368. Its totient is φ = 13452480.

The previous prime is 22226989. The next prime is 22226999. The reversal of 22226997 is 79962222.

It is a happy number.

It is not a de Polignac number, because 22226997 - 2³ = 22226989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22226999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2293 + ... + 7050.

It is an arithmetic number, because the mean of its divisors is an integer number (2027648).

Almost surely, 2^22226997 is an apocalyptic number.

It is an amenable number.

22226997 is a deficient number, since it is larger than the sum of its proper divisors (10215371).

22226997 is a wasteful number, since it uses less digits than its factorization.

22226997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9420.

The product of its digits is 54432, while the sum is 39.

The square root of 22226997 is about 4714.5516223709. The cubic root of 22226997 is about 281.1643563430.

The spelling of 22226997 in words is "twenty-two million, two hundred twenty-six thousand, nine hundred ninety-seven".