22002865 has 8 divisors (see below), whose sum is σ = 26461440. Its totient is φ = 17563632.

The previous prime is 22002863. The next prime is 22002887. The reversal of 22002865 is 56820022.

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 22002865 - 2¹ = 22002863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22002863) 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, 2199 + ... + 6988.

It is an arithmetic number, because the mean of its divisors is an integer number (3307680).

Almost surely, 2^22002865 is an apocalyptic number.

It is an amenable number.

22002865 is a deficient number, since it is larger than the sum of its proper divisors (4458575).

22002865 is an equidigital number, since it uses as much as digits as its factorization.

22002865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9671.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 22002865 is about 4690.7211599071. The cubic root of 22002865 is about 280.2160959356.

Adding to 22002865 its reverse (56820022), we get a palindrome (78822887).

The spelling of 22002865 in words is "twenty-two million, two thousand, eight hundred sixty-five".