815080 has 64 divisors (see below), whose sum is σ = 2177280. Its totient is φ = 268800.

The previous prime is 815063. The next prime is 815123. The reversal of 815080 is 80518.

It is a plaindrome in base 15.

It is a nialpdrome in base 7.

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, 11445 + ... + 11515.

It is an arithmetic number, because the mean of its divisors is an integer number (34020).

2⁸¹⁵⁰⁸⁰ 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 815080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1088640).

815080 is an abundant number, since it is smaller than the sum of its proper divisors (1362200).

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

815080 is a wasteful number, since it uses less digits than its factorization.

815080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 815080 is about 902.8178110782. The cubic root of 815080 is about 93.4114425499.

Adding to 815080 its reverse (80518), we get a palindrome (895598).

The spelling of 815080 in words is "eight hundred fifteen thousand, eighty".