6244648128 has 84 divisors (see below), whose sum is σ = 18367771240. Its totient is φ = 2080454400.

The previous prime is 6244648127. The next prime is 6244648147. The reversal of 6244648128 is 8218464426.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

6244648128 is a `hidden beast` number, since 62 + 4 + 464 + 8 + 128 = 666.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (6244648121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3283978 + ... + 3285878.

Almost surely, 2^6244648128 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 6244648128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9183885620).

6244648128 is an abundant number, since it is smaller than the sum of its proper divisors (12123123112).

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

6244648128 is an frugal number, since it uses more digits than its factorization.

6244648128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3823 (or 1906 counting only the distinct ones).

The product of its digits is 589824, while the sum is 45.

The square root of 6244648128 is about 79023.0860445225. The cubic root of 6244648128 is about 1841.4898267752.

The spelling of 6244648128 in words is "six billion, two hundred forty-four million, six hundred forty-eight thousand, one hundred twenty-eight".