452440 has 16 divisors (see below), whose sum is σ = 1018080. Its totient is φ = 180960.

The previous prime is 452401. The next prime is 452443. The reversal of 452440 is 44254.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (452443) by changing a digit.

452440 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, 5616 + ... + 5695.

It is an arithmetic number, because the mean of its divisors is an integer number (63630).

2⁴⁵²⁴⁴⁰ is an apocalyptic number.

452440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

452440 is an abundant number, since it is smaller than the sum of its proper divisors (565640).

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

452440 is a wasteful number, since it uses less digits than its factorization.

452440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11322 (or 11318 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 452440 is about 672.6366032264. The cubic root of 452440 is about 76.7691969932.

Adding to 452440 its reverse (44254), we get a palindrome (496694).

It can be divided in two parts, 45 and 2440, that added together give a triangular number (2485 = T₇₀).

The spelling of 452440 in words is "four hundred fifty-two thousand, four hundred forty".