815053236 has 48 divisors (see below), whose sum is σ = 2083112640. Its totient is φ = 246883840.

The previous prime is 815053229. The next prime is 815053237. The reversal of 815053236 is 632350518.

It is a junction number, because it is equal to n+sod(n) for n = 815053197 and 815053206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (815053237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62970 + ... + 74801.

It is an arithmetic number, because the mean of its divisors is an integer number (43398180).

Almost surely, 2^815053236 is an apocalyptic number.

It is an amenable number.

815053236 is an abundant number, since it is smaller than the sum of its proper divisors (1268059404).

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

815053236 is a wasteful number, since it uses less digits than its factorization.

815053236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137824 (or 137822 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 815053236 is about 28549.1372198881. The cubic root of 815053236 is about 934.1042011805.

The spelling of 815053236 in words is "eight hundred fifteen million, fifty-three thousand, two hundred thirty-six".