4771897728 has 128 divisors (see below), whose sum is σ = 14369107200. Its totient is φ = 1390970880.

The previous prime is 4771897723. The next prime is 4771897763. The reversal of 4771897728 is 8277981774.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4771897723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69693 + ... + 120003.

It is an arithmetic number, because the mean of its divisors is an integer number (112258650).

Almost surely, 2^4771897728 is an apocalyptic number.

4771897728 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 4771897728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7184553600).

4771897728 is an abundant number, since it is smaller than the sum of its proper divisors (9597209472).

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

4771897728 is a wasteful number, since it uses less digits than its factorization.

4771897728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50360 (or 50348 counting only the distinct ones).

The product of its digits is 11063808, while the sum is 60.

The square root of 4771897728 is about 69078.9239059208. The cubic root of 4771897728 is about 1683.5668887278.

The spelling of 4771897728 in words is "four billion, seven hundred seventy-one million, eight hundred ninety-seven thousand, seven hundred twenty-eight".