229788138 has 8 divisors (see below), whose sum is σ = 459576288. Its totient is φ = 76596044.

The previous prime is 229788137. The next prime is 229788157. The reversal of 229788138 is 831887922.

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

229788138 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (229788131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19149006 + ... + 19149017.

It is an arithmetic number, because the mean of its divisors is an integer number (57447036).

Almost surely, 2^229788138 is an apocalyptic number.

229788138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

229788138 is a wasteful number, since it uses less digits than its factorization.

229788138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38298028.

The product of its digits is 387072, while the sum is 48.

The square root of 229788138 is about 15158.7643955568. The cubic root of 229788138 is about 612.5043846972.

The spelling of 229788138 in words is "two hundred twenty-nine million, seven hundred eighty-eight thousand, one hundred thirty-eight".