815229 has 12 divisors (see below), whose sum is σ = 1185600. Its totient is φ = 539784.

The previous prime is 815209. The next prime is 815231. The reversal of 815229 is 922518.

It is not a de Polignac number, because 815229 - 2⁵ = 815197 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (815209) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1962 + ... + 2340.

It is an arithmetic number, because the mean of its divisors is an integer number (98800).

2⁸¹⁵²²⁹ is an apocalyptic number.

It is an amenable number.

815229 is a deficient number, since it is larger than the sum of its proper divisors (370371).

815229 is a wasteful number, since it uses less digits than its factorization.

815229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624 (or 621 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 815229 is about 902.9003267249. The cubic root of 815229 is about 93.4171342026.

The spelling of 815229 in words is "eight hundred fifteen thousand, two hundred twenty-nine".