229132836 has 72 divisors (see below), whose sum is σ = 593448128. Its totient is φ = 74520000.

The previous prime is 229132793. The next prime is 229132859. The reversal of 229132836 is 638231922.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 229132836.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 331251 + ... + 331941.

Almost surely, 2^229132836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 229132836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296724064).

229132836 is an abundant number, since it is smaller than the sum of its proper divisors (364315292).

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

229132836 is a wasteful number, since it uses less digits than its factorization.

229132836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913 (or 908 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 229132836 is about 15137.1343391013. The cubic root of 229132836 is about 611.9215906210.

The spelling of 229132836 in words is "two hundred twenty-nine million, one hundred thirty-two thousand, eight hundred thirty-six".