4451343240 has 128 divisors (see below), whose sum is σ = 14371758720. Its totient is φ = 1098854400.

The previous prime is 4451343229. The next prime is 4451343271. The reversal of 4451343240 is 423431544.

It is a super-3 number, since 3×4451343240³ (a number of 30 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 4451343198 and 4451343207.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106555 + ... + 142325.

It is an arithmetic number, because the mean of its divisors is an integer number (112279365).

Almost surely, 2^4451343240 is an apocalyptic number.

4451343240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4451343240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7185879360).

4451343240 is an abundant number, since it is smaller than the sum of its proper divisors (9920415480).

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

4451343240 is a wasteful number, since it uses less digits than its factorization.

4451343240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35863 (or 35859 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 4451343240 is about 66718.3875704442. The cubic root of 4451343240 is about 1644.9916377534.

Adding to 4451343240 its reverse (423431544), we get a palindrome (4874774784).

The spelling of 4451343240 in words is "four billion, four hundred fifty-one million, three hundred forty-three thousand, two hundred forty".