22228917 has 8 divisors (see below), whose sum is σ = 31198560. Its totient is φ = 14039280.

The previous prime is 22228901. The next prime is 22228919. The reversal of 22228917 is 71982222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22228917 - 2⁴ = 22228901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22228919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194934 + ... + 195047.

It is an arithmetic number, because the mean of its divisors is an integer number (3899820).

Almost surely, 2^22228917 is an apocalyptic number.

It is an amenable number.

22228917 is a deficient number, since it is larger than the sum of its proper divisors (8969643).

22228917 is a wasteful number, since it uses less digits than its factorization.

22228917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390003.

The product of its digits is 8064, while the sum is 33.

The square root of 22228917 is about 4714.7552428520. The cubic root of 22228917 is about 281.1724519038.

The spelling of 22228917 in words is "twenty-two million, two hundred twenty-eight thousand, nine hundred seventeen".