843480 has 128 divisors (see below), whose sum is σ = 3110400. Its totient is φ = 201600.

The previous prime is 843473. The next prime is 843487. The reversal of 843480 is 84348.

It is an interprime number because it is at equal distance from previous prime (843473) and next prime (843487).

It is a super-2 number, since 2×843480² = 1422917020800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 843480.

It is not an unprimeable number, because it can be changed into a prime (843487) by changing a digit.

843480 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 31 ways as a sum of consecutive naturals, for example, 11845 + ... + 11915.

It is an arithmetic number, because the mean of its divisors is an integer number (24300).

2⁸⁴³⁴⁸⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 843480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1555200).

843480 is an abundant number, since it is smaller than the sum of its proper divisors (2266920).

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

843480 is a wasteful number, since it uses less digits than its factorization.

843480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 92 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 843480 is about 918.4116723997. The cubic root of 843480 is about 94.4839982984.

The spelling of 843480 in words is "eight hundred forty-three thousand, four hundred eighty".