229638815 has 16 divisors (see below), whose sum is σ = 319636992. Its totient is φ = 155114784.

The previous prime is 229638781. The next prime is 229638821. The reversal of 229638815 is 518836922.

It is a cyclic number.

It is not a de Polignac number, because 229638815 - 2¹² = 229634719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46619 + ... + 51308.

It is an arithmetic number, because the mean of its divisors is an integer number (19977312).

Almost surely, 2^229638815 is an apocalyptic number.

229638815 is a deficient number, since it is larger than the sum of its proper divisors (89998177).

229638815 is an equidigital number, since it uses as much as digits as its factorization.

229638815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98006.

The product of its digits is 207360, while the sum is 44.

The square root of 229638815 is about 15153.8382926571. The cubic root of 229638815 is about 612.3716815740.

The spelling of 229638815 in words is "two hundred twenty-nine million, six hundred thirty-eight thousand, eight hundred fifteen".