229920731268 has 12 divisors (see below), whose sum is σ = 536481706320. Its totient is φ = 76640243752.

The previous prime is 229920731231. The next prime is 229920731269. The reversal of 229920731268 is 862137029922.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 229920731268.

It is not an unprimeable number, because it can be changed into a prime (229920731269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9580030458 + ... + 9580030481.

It is an arithmetic number, because the mean of its divisors is an integer number (44706808860).

Almost surely, 2^229920731268 is an apocalyptic number.

It is an amenable number.

229920731268 is an abundant number, since it is smaller than the sum of its proper divisors (306560975052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

229920731268 is a wasteful number, since it uses less digits than its factorization.

229920731268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19160060946 (or 19160060944 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 51.

The spelling of 229920731268 in words is "two hundred twenty-nine billion, nine hundred twenty million, seven hundred thirty-one thousand, two hundred sixty-eight".