451344340 has 48 divisors (see below), whose sum is σ = 973969920. Its totient is φ = 175593600.

The previous prime is 451344331. The next prime is 451344353. The reversal of 451344340 is 43443154.

It is a junction number, because it is equal to n+sod(n) for n = 451344299 and 451344308.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230365 + ... + 232315.

It is an arithmetic number, because the mean of its divisors is an integer number (20291040).

Almost surely, 2^451344340 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 451344340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (486984960).

451344340 is an abundant number, since it is smaller than the sum of its proper divisors (522625580).

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

451344340 is a wasteful number, since it uses less digits than its factorization.

451344340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2272 (or 2270 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 451344340 is about 21244.8662033914. The cubic root of 451344340 is about 767.0717703641.

Adding to 451344340 its reverse (43443154), we get a palindrome (494787494).

The spelling of 451344340 in words is "four hundred fifty-one million, three hundred forty-four thousand, three hundred forty".