181244 has 12 divisors (see below), whose sum is σ = 362544. Its totient is φ = 77664.

The previous prime is 181243. The next prime is 181253. The reversal of 181244 is 442181.

181244 = 147² + 148² + ... + 154².

181244 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

181244 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3209 + ... + 3264.

It is an arithmetic number, because the mean of its divisors is an integer number (30212).

2¹⁸¹²⁴⁴ is an apocalyptic number.

181244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

181244 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

181244 is a wasteful number, since it uses less digits than its factorization.

181244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6484 (or 6482 counting only the distinct ones).

The product of its digits is 256, while the sum is 20.

The square root of 181244 is about 425.7276124472. The cubic root of 181244 is about 56.5919353216.

The spelling of 181244 in words is "one hundred eighty-one thousand, two hundred forty-four".