451672 has 32 divisors (see below), whose sum is σ = 942480. Its totient is φ = 201600.

The previous prime is 451669. The next prime is 451679. The reversal of 451672 is 276154.

It is an Ulam number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4422 + ... + 4522.

2⁴⁵¹⁶⁷² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 451672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (471240).

451672 is an abundant number, since it is smaller than the sum of its proper divisors (490808).

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

451672 is a wasteful number, since it uses less digits than its factorization.

451672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 159 counting only the distinct ones).

The product of its digits is 1680, while the sum is 25.

The square root of 451672 is about 672.0654730010. The cubic root of 451672 is about 76.7257347773.

The spelling of 451672 in words is "four hundred fifty-one thousand, six hundred seventy-two".