815241936 has 80 divisors (see below), whose sum is σ = 2256980544. Its totient is φ = 252659712.

The previous prime is 815241929. The next prime is 815241941. The reversal of 815241936 is 639142518.

It is a junction number, because it is equal to n+sod(n) for n = 815241894 and 815241903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61710 + ... + 73746.

Almost surely, 2^815241936 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 815241936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1128490272).

815241936 is an abundant number, since it is smaller than the sum of its proper divisors (1441738608).

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

815241936 is a wasteful number, since it uses less digits than its factorization.

815241936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12148 (or 12142 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The square root of 815241936 is about 28552.4418570461. The cubic root of 815241936 is about 934.1762831231.

The spelling of 815241936 in words is "eight hundred fifteen million, two hundred forty-one thousand, nine hundred thirty-six".