229205812 has 24 divisors (see below), whose sum is σ = 439790400. Its totient is φ = 103656960.

The previous prime is 229205807. The next prime is 229205819. The reversal of 229205812 is 218502922.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229205819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4333 + ... + 21844.

It is an arithmetic number, because the mean of its divisors is an integer number (18324600).

Almost surely, 2^229205812 is an apocalyptic number.

229205812 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

229205812 is a deficient number, since it is larger than the sum of its proper divisors (210584588).

229205812 is a wasteful number, since it uses less digits than its factorization.

229205812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26391 (or 26389 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 229205812 is about 15139.5446430862. The cubic root of 229205812 is about 611.9865469012.

The spelling of 229205812 in words is "two hundred twenty-nine million, two hundred five thousand, eight hundred twelve".