818880 has 56 divisors (see below), whose sum is σ = 2602992. Its totient is φ = 218112.

The previous prime is 818837. The next prime is 818887. The reversal of 818880 is 88818.

818880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (818887) by changing a digit.

818880 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 534 + ... + 1386.

It is an arithmetic number, because the mean of its divisors is an integer number (46482).

2⁸¹⁸⁸⁸⁰ is an apocalyptic number.

818880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 818880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1301496).

818880 is an abundant number, since it is smaller than the sum of its proper divisors (1784112).

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

818880 is a wasteful number, since it uses less digits than its factorization.

818880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873 (or 863 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 33.

The square root of 818880 is about 904.9198859568. The cubic root of 818880 is about 93.5563826288.

The spelling of 818880 in words is "eight hundred eighteen thousand, eight hundred eighty".