4450576640 has 144 divisors (see below), whose sum is σ = 11267182080. Its totient is φ = 1681612800.

The previous prime is 4450576633. The next prime is 4450576649. The reversal of 4450576640 is 466750544.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (4450576649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1743365 + ... + 1745915.

It is an arithmetic number, because the mean of its divisors is an integer number (78244320).

Almost surely, 2^4450576640 is an apocalyptic number.

4450576640 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 4450576640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5633591040).

4450576640 is an abundant number, since it is smaller than the sum of its proper divisors (6816605440).

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

4450576640 is a wasteful number, since it uses less digits than its factorization.

4450576640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2648 (or 2634 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 41.

The square root of 4450576640 is about 66712.6422801556. The cubic root of 4450576640 is about 1644.8972001181.

The spelling of 4450576640 in words is "four billion, four hundred fifty million, five hundred seventy-six thousand, six hundred forty".