22266391 has 8 divisors (see below), whose sum is σ = 25989120. Its totient is φ = 18679128.

The previous prime is 22266383. The next prime is 22266407. The reversal of 22266391 is 19366222.

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 22266391 - 2³ = 22266383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22266331) 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, 33511 + ... + 34168.

It is an arithmetic number, because the mean of its divisors is an integer number (3248640).

Almost surely, 2^22266391 is an apocalyptic number.

22266391 is a deficient number, since it is larger than the sum of its proper divisors (3722729).

22266391 is an equidigital number, since it uses as much as digits as its factorization.

22266391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67733.

The product of its digits is 7776, while the sum is 31.

The square root of 22266391 is about 4718.7276886890. The cubic root of 22266391 is about 281.3303654454.

The spelling of 22266391 in words is "twenty-two million, two hundred sixty-six thousand, three hundred ninety-one".