815043376 has 120 divisors (see below), whose sum is σ = 1982953440. Its totient is φ = 316796928.

The previous prime is 815043367. The next prime is 815043379. The reversal of 815043376 is 673340518.

It is a super-2 number, since 2×815043376² = 1328591409522954752, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (815043379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1601010 + ... + 1601518.

It is an arithmetic number, because the mean of its divisors is an integer number (16524612).

Almost surely, 2^815043376 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 815043376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (991476720).

815043376 is an abundant number, since it is smaller than the sum of its proper divisors (1167910064).

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

815043376 is a wasteful number, since it uses less digits than its factorization.

815043376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 815043376 is about 28548.9645346377. The cubic root of 815043376 is about 934.1004344308.

The spelling of 815043376 in words is "eight hundred fifteen million, forty-three thousand, three hundred seventy-six".