543834 has 28 divisors (see below), whose sum is σ = 1226346. Its totient is φ = 180792.

The previous prime is 543827. The next prime is 543841. The reversal of 543834 is 438345.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (543827) and next prime (543841).

It can be written as a sum of positive squares in only one way, i.e., 455625 + 88209 = 675^2 + 297^2 .

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

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 543798 and 543807.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 1272 + ... + 1644.

2⁵⁴³⁸³⁴ is an apocalyptic number.

543834 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 543834, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (613173).

543834 is an abundant number, since it is smaller than the sum of its proper divisors (682512).

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

543834 is an equidigital number, since it uses as much as digits as its factorization.

543834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393 (or 378 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 543834 is about 737.4510153224. The cubic root of 543834 is about 81.6247978266.

The spelling of 543834 in words is "five hundred forty-three thousand, eight hundred thirty-four".