22226287 has 8 divisors (see below), whose sum is σ = 23012480. Its totient is φ = 21444480.

The previous prime is 22226279. The next prime is 22226297. The reversal of 22226287 is 78262222.

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

It is a cyclic number.

It is not a de Polignac number, because 22226287 - 2³ = 22226279 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22226207) 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, 11803 + ... + 13555.

It is an arithmetic number, because the mean of its divisors is an integer number (2876560).

Almost surely, 2^22226287 is an apocalyptic number.

22226287 is a deficient number, since it is larger than the sum of its proper divisors (786193).

22226287 is a wasteful number, since it uses less digits than its factorization.

22226287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2193.

The product of its digits is 10752, while the sum is 31.

The square root of 22226287 is about 4714.4763229865. The cubic root of 22226287 is about 281.1613625540.

The spelling of 22226287 in words is "twenty-two million, two hundred twenty-six thousand, two hundred eighty-seven".