222233729 has 8 divisors (see below), whose sum is σ = 228443688. Its totient is φ = 216034560.

The previous prime is 222233723. The next prime is 222233743. The reversal of 222233729 is 927332222.

It can be written as a sum of positive squares in 4 ways, for example, as 39037504 + 183196225 = 6248^2 + 13535^2 .

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-222233729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222233695 and 222233704.

It is not an unprimeable number, because it can be changed into a prime (222233723) 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, 57209 + ... + 60969.

It is an arithmetic number, because the mean of its divisors is an integer number (28555461).

Almost surely, 2^222233729 is an apocalyptic number.

It is an amenable number.

222233729 is a deficient number, since it is larger than the sum of its proper divisors (6209959).

222233729 is a wasteful number, since it uses less digits than its factorization.

222233729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5395.

The product of its digits is 18144, while the sum is 32.

The square root of 222233729 is about 14907.5057940623. The cubic root of 222233729 is about 605.7173186984.

It can be divided in two parts, 22223 and 3729, that added together give a palindrome (25952).

The spelling of 222233729 in words is "two hundred twenty-two million, two hundred thirty-three thousand, seven hundred twenty-nine".