222640329 has 8 divisors (see below), whose sum is σ = 297465280. Its totient is φ = 148121136.

The previous prime is 222640303. The next prime is 222640351. The reversal of 222640329 is 923046222.

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

It is not a de Polignac number, because 222640329 - 2⁸ = 222640073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222640296 and 222640305.

It is not an unprimeable number, because it can be changed into a prime (222640399) by changing a digit.

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, 74734 + ... + 77655.

It is an arithmetic number, because the mean of its divisors is an integer number (37183160).

Almost surely, 2^222640329 is an apocalyptic number.

It is an amenable number.

222640329 is a deficient number, since it is larger than the sum of its proper divisors (74824951).

222640329 is a wasteful number, since it uses less digits than its factorization.

222640329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152879.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 222640329 is about 14921.1369875087. The cubic root of 222640329 is about 606.0865015014.

The spelling of 222640329 in words is "two hundred twenty-two million, six hundred forty thousand, three hundred twenty-nine".