798840 has 96 divisors (see below), whose sum is σ = 2976480. Its totient is φ = 182016.

The previous prime is 798823. The next prime is 798871. The reversal of 798840 is 48897.

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

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 798795 and 798804.

It is a congruent number.

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, 2362 + ... + 2678.

It is an arithmetic number, because the mean of its divisors is an integer number (31005).

2⁷⁹⁸⁸⁴⁰ is an apocalyptic number.

798840 is a gapful number since it is divisible by the number (70) 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 798840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1488240).

798840 is an abundant number, since it is smaller than the sum of its proper divisors (2177640).

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

798840 is a wasteful number, since it uses less digits than its factorization.

798840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341 (or 334 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 798840 is about 893.7784960492. The cubic root of 798840 is about 92.7868862762.

The spelling of 798840 in words is "seven hundred ninety-eight thousand, eight hundred forty".