815242316 has 48 divisors (see below), whose sum is σ = 1691289600. Its totient is φ = 336426048.

The previous prime is 815242313. The next prime is 815242331. The reversal of 815242316 is 613242518.

It is not an unprimeable number, because it can be changed into a prime (815242313) 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, 355325 + ... + 357611.

It is an arithmetic number, because the mean of its divisors is an integer number (35235200).

Almost surely, 2^815242316 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 815242316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (845644800).

815242316 is an abundant number, since it is smaller than the sum of its proper divisors (876047284).

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

815242316 is a wasteful number, since it uses less digits than its factorization.

815242316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2766 (or 2764 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 815242316 is about 28552.4485114675. The cubic root of 815242316 is about 934.1764282689.

The spelling of 815242316 in words is "eight hundred fifteen million, two hundred forty-two thousand, three hundred sixteen".