847120 has 20 divisors (see below), whose sum is σ = 1969740. Its totient is φ = 338816.

The previous prime is 847109. The next prime is 847129. The reversal of 847120 is 21748.

It can be written as a sum of positive squares in 2 ways, for example, as 200704 + 646416 = 448^2 + 804^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×847120² = 1435224588800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 847091 and 847100.

It is not an unprimeable number, because it can be changed into a prime (847129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5215 + ... + 5374.

It is an arithmetic number, because the mean of its divisors is an integer number (98487).

2⁸⁴⁷¹²⁰ is an apocalyptic number.

847120 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

847120 is an abundant number, since it is smaller than the sum of its proper divisors (1122620).

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

847120 is a wasteful number, since it uses less digits than its factorization.

847120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10602 (or 10596 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 847120 is about 920.3912211663. The cubic root of 847120 is about 94.6197170707.

Adding to 847120 its reverse (21748), we get a palindrome (868868).

The spelling of 847120 in words is "eight hundred forty-seven thousand, one hundred twenty".