181456 has 20 divisors (see below), whose sum is σ = 383904. Its totient is φ = 82400.

The previous prime is 181439. The next prime is 181457. The reversal of 181456 is 654181.

181456 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 181456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181457) by changing a digit.

181456 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 (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340 + ... + 691.

2¹⁸¹⁴⁵⁶ is an apocalyptic number.

181456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

181456 is an abundant number, since it is smaller than the sum of its proper divisors (202448).

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

181456 is a wasteful number, since it uses less digits than its factorization.

181456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050 (or 1044 counting only the distinct ones).

The product of its digits is 960, while the sum is 25.

The square root of 181456 is about 425.9765251748. The cubic root of 181456 is about 56.6139918045.

The spelling of 181456 in words is "one hundred eighty-one thousand, four hundred fifty-six".