4350728440 has 64 divisors (see below), whose sum is σ = 9973692000. Its totient is φ = 1707594240.

The previous prime is 4350728423. The next prime is 4350728467. The reversal of 4350728440 is 448270534.

It is a self number, because there is not a number n which added to its sum of digits gives 4350728440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1558566 + ... + 1561354.

Almost surely, 2^4350728440 is an apocalyptic number.

4350728440 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 4350728440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4986846000).

4350728440 is an abundant number, since it is smaller than the sum of its proper divisors (5622963560).

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

4350728440 is a wasteful number, since it uses less digits than its factorization.

4350728440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3520 (or 3516 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 37.

The square root of 4350728440 is about 65960.0518495854. The cubic root of 4350728440 is about 1632.5030158001.

Adding to 4350728440 its reverse (448270534), we get a palindrome (4798998974).

The spelling of 4350728440 in words is "four billion, three hundred fifty million, seven hundred twenty-eight thousand, four hundred forty".