981234 has 28 divisors (see below), whose sum is σ = 2210046. Its totient is φ = 326592.

The previous prime is 981221. The next prime is 981241. The reversal of 981234 is 432189.

It can be written as a sum of positive squares in only one way, i.e., 893025 + 88209 = 945^2 + 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 Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 981198 and 981207.

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 981234.

It is an unprimeable number.

981234 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 1122 + ... + 1794.

2⁹⁸¹²³⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 981234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1105023).

981234 is an abundant number, since it is smaller than the sum of its proper divisors (1228812).

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

981234 is an equidigital number, since it uses as much as digits as its factorization.

981234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693 (or 678 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 981234 is about 990.5725617036. The cubic root of 981234 is about 99.3705124353.

The spelling of 981234 in words is "nine hundred eighty-one thousand, two hundred thirty-four".