229219836 has 12 divisors (see below), whose sum is σ = 534846312. Its totient is φ = 76406608.

The previous prime is 229219829. The next prime is 229219841. The reversal of 229219836 is 638912922.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9550815 + ... + 9550838.

It is an arithmetic number, because the mean of its divisors is an integer number (44570526).

Almost surely, 2^229219836 is an apocalyptic number.

It is an amenable number.

229219836 is an abundant number, since it is smaller than the sum of its proper divisors (305626476).

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

229219836 is a wasteful number, since it uses less digits than its factorization.

229219836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19101660 (or 19101658 counting only the distinct ones).

The product of its digits is 93312, while the sum is 42.

The square root of 229219836 is about 15140.0077939214. The cubic root of 229219836 is about 611.9990281500. Note that the first 3 decimals are identical.

The spelling of 229219836 in words is "two hundred twenty-nine million, two hundred nineteen thousand, eight hundred thirty-six".