450340 has 48 divisors (see below), whose sum is σ = 1088640. Its totient is φ = 154880.

The previous prime is 450311. The next prime is 450343. The reversal of 450340 is 43054.

It is a super-2 number, since 2×450340² = 405612231200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (450343) by changing a digit.

450340 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 15 ways as a sum of consecutive naturals, for example, 5016 + ... + 5104.

It is an arithmetic number, because the mean of its divisors is an integer number (22680).

2⁴⁵⁰³⁴⁰ 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 450340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (544320).

450340 is an abundant number, since it is smaller than the sum of its proper divisors (638300).

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

450340 is a wasteful number, since it uses less digits than its factorization.

450340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 450340 is about 671.0737664370. The cubic root of 450340 is about 76.6502380257.

Adding to 450340 its reverse (43054), we get a palindrome (493394).

The spelling of 450340 in words is "four hundred fifty thousand, three hundred forty".