4881385728 has 144 divisors (see below), whose sum is σ = 14826031360. Its totient is φ = 1583069184.

The previous prime is 4881385727. The next prime is 4881385739. The reversal of 4881385728 is 8275831884.

4881385728 is a `hidden beast` number, since 488 + 13 + 85 + 72 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (4881385723) 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, 246201 + ... + 265287.

Almost surely, 2^4881385728 is an apocalyptic number.

4881385728 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 4881385728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7413015680).

4881385728 is an abundant number, since it is smaller than the sum of its proper divisors (9944645632).

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

4881385728 is a wasteful number, since it uses less digits than its factorization.

4881385728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19149 (or 19129 counting only the distinct ones).

The product of its digits is 3440640, while the sum is 54.

The square root of 4881385728 is about 69866.9144015964. The cubic root of 4881385728 is about 1696.3457524590.

The spelling of 4881385728 in words is "four billion, eight hundred eighty-one million, three hundred eighty-five thousand, seven hundred twenty-eight".