4450126128 has 80 divisors (see below), whose sum is σ = 13155943680. Its totient is φ = 1269773568.

The previous prime is 4450126099. The next prime is 4450126139. The reversal of 4450126128 is 8216210544.

It is a happy 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, 256018 + ... + 272846.

It is an arithmetic number, because the mean of its divisors is an integer number (164449296).

Almost surely, 2^4450126128 is an apocalyptic number.

4450126128 is a gapful number since it is divisible by the number (48) 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 4450126128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6577971840).

4450126128 is an abundant number, since it is smaller than the sum of its proper divisors (8705817552).

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

4450126128 is a wasteful number, since it uses less digits than its factorization.

4450126128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17634 (or 17628 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 4450126128 is about 66709.2656832617. The cubic root of 4450126128 is about 1644.8416963791.

The spelling of 4450126128 in words is "four billion, four hundred fifty million, one hundred twenty-six thousand, one hundred twenty-eight".