815223027 has 12 divisors (see below), whose sum is σ = 1123162440. Its totient is φ = 525948480.

The previous prime is 815223023. The next prime is 815223029. The reversal of 815223027 is 720322518.

815223027 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 815223027 - 2² = 815223023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 815222985 and 815223003.

It is not an unprimeable number, because it can be changed into a prime (815223023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138502 + ... + 144267.

It is an arithmetic number, because the mean of its divisors is an integer number (93596870).

Almost surely, 2^815223027 is an apocalyptic number.

815223027 is a deficient number, since it is larger than the sum of its proper divisors (307939413).

815223027 is a wasteful number, since it uses less digits than its factorization.

815223027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282834 (or 282803 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 815223027 is about 28552.1107275802. The cubic root of 815223027 is about 934.1690605326.

The spelling of 815223027 in words is "eight hundred fifteen million, two hundred twenty-three thousand, twenty-seven".