80840844 has 72 divisors (see below), whose sum is σ = 235216800. Its totient is φ = 22931712.

The previous prime is 80840833. The next prime is 80840861. The reversal of 80840844 is 44804808.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 80840799 and 80840808.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36472 + ... + 38624.

It is an arithmetic number, because the mean of its divisors is an integer number (3266900).

Almost surely, 2^80840844 is an apocalyptic number.

80840844 is a gapful number since it is divisible by the number (84) 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 80840844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117608400).

80840844 is an abundant number, since it is smaller than the sum of its proper divisors (154375956).

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

80840844 is a wasteful number, since it uses less digits than its factorization.

80840844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2319 (or 2314 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 36.

The square root of 80840844 is about 8991.1536523407. The cubic root of 80840844 is about 432.3912992664.

The spelling of 80840844 in words is "eighty million, eight hundred forty thousand, eight hundred forty-four".