451982 has 8 divisors (see below), whose sum is σ = 688296. Its totient is φ = 222552.

The previous prime is 451967. The next prime is 451987. The reversal of 451982 is 289154.

It is a sphenic number, since it is the product of 3 distinct primes.

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 451982.

It is not an unprimeable number, because it can be changed into a prime (451987) by changing a digit.

451982 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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1553 + ... + 1820.

It is an arithmetic number, because the mean of its divisors is an integer number (86037).

2⁴⁵¹⁹⁸² is an apocalyptic number.

451982 is a deficient number, since it is larger than the sum of its proper divisors (236314).

451982 is a wasteful number, since it uses less digits than its factorization.

451982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3442.

The product of its digits is 2880, while the sum is 29.

The square root of 451982 is about 672.2960657329. The cubic root of 451982 is about 76.7432840449.

The spelling of 451982 in words is "four hundred fifty-one thousand, nine hundred eighty-two".