454640 has 20 divisors (see below), whose sum is σ = 1057224. Its totient is φ = 181824.

The previous prime is 454637. The next prime is 454673. The reversal of 454640 is 46454.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a nialpdrome in base 14.

It is a congruent number.

It is an unprimeable 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 3 ways as a sum of consecutive naturals, for example, 2762 + ... + 2921.

2⁴⁵⁴⁶⁴⁰ is an apocalyptic number.

454640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

454640 is an abundant number, since it is smaller than the sum of its proper divisors (602584).

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

454640 is a wasteful number, since it uses less digits than its factorization.

454640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5696 (or 5690 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 454640 is about 674.2699756032. The cubic root of 454640 is about 76.8934265213.

The spelling of 454640 in words is "four hundred fifty-four thousand, six hundred forty".