815228274 has 16 divisors (see below), whose sum is σ = 1863379008. Its totient is φ = 232922352.

The previous prime is 815228273. The next prime is 815228279. The reversal of 815228274 is 472822518.

815228274 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (815228273) 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, 9705057 + ... + 9705140.

It is an arithmetic number, because the mean of its divisors is an integer number (116461188).

Almost surely, 2^815228274 is an apocalyptic number.

815228274 is an abundant number, since it is smaller than the sum of its proper divisors (1048150734).

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

815228274 is a wasteful number, since it uses less digits than its factorization.

815228274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19410209.

The product of its digits is 71680, while the sum is 39.

The square root of 815228274 is about 28552.2026120578. The cubic root of 815228274 is about 934.1710647181.

The spelling of 815228274 in words is "eight hundred fifteen million, two hundred twenty-eight thousand, two hundred seventy-four".