22243855 has 8 divisors (see below), whose sum is σ = 26766432. Its totient is φ = 17745888.

The previous prime is 22243849. The next prime is 22243867. The reversal of 22243855 is 55834222.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22243855 is a prime.

It is a super-2 number, since 2×22243855² = 989578170522050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4099 + ... + 7828.

It is an arithmetic number, because the mean of its divisors is an integer number (3345804).

Almost surely, 2^22243855 is an apocalyptic number.

22243855 is a deficient number, since it is larger than the sum of its proper divisors (4522577).

22243855 is a wasteful number, since it uses less digits than its factorization.

22243855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12305.

The product of its digits is 19200, while the sum is 31.

The square root of 22243855 is about 4716.3391523511. The cubic root of 22243855 is about 281.2354211373.

The spelling of 22243855 in words is "twenty-two million, two hundred forty-three thousand, eight hundred fifty-five".