22236865 has 8 divisors (see below), whose sum is σ = 30496320. Its totient is φ = 15248112.

The previous prime is 22236853. The next prime is 22236887. The reversal of 22236865 is 56863222.

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 22236865 - 2⁹ = 22236353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22236865.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317635 + ... + 317704.

It is an arithmetic number, because the mean of its divisors is an integer number (3812040).

Almost surely, 2^22236865 is an apocalyptic number.

It is an amenable number.

22236865 is a deficient number, since it is larger than the sum of its proper divisors (8259455).

22236865 is an equidigital number, since it uses as much as digits as its factorization.

22236865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635351.

The product of its digits is 34560, while the sum is 34.

The square root of 22236865 is about 4715.5980532696. The cubic root of 22236865 is about 281.2059591946.

The spelling of 22236865 in words is "twenty-two million, two hundred thirty-six thousand, eight hundred sixty-five".