844080 has 40 divisors (see below), whose sum is σ = 2617392. Its totient is φ = 225024.

The previous prime is 844069. The next prime is 844087. The reversal of 844080 is 80448.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a self number, because there is not a number n which added to its sum of digits gives 844080.

It is not an unprimeable number, because it can be changed into a prime (844087) by changing a digit.

844080 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, 1519 + ... + 1998.

2⁸⁴⁴⁰⁸⁰ is an apocalyptic number.

844080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

844080 is an abundant number, since it is smaller than the sum of its proper divisors (1773312).

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

844080 is a wasteful number, since it uses less digits than its factorization.

844080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3533 (or 3527 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 844080 is about 918.7382652312. The cubic root of 844080 is about 94.5063963644.

The spelling of 844080 in words is "eight hundred forty-four thousand, eighty".