4385365728 has 24 divisors (see below), whose sum is σ = 11511585288. Its totient is φ = 1461788544.

The previous prime is 4385365723. The next prime is 4385365739. The reversal of 4385365728 is 8275635834.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4385365723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22840351 + ... + 22840542.

It is an arithmetic number, because the mean of its divisors is an integer number (479649387).

Almost surely, 2^4385365728 is an apocalyptic number.

4385365728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

4385365728 is an abundant number, since it is smaller than the sum of its proper divisors (7126219560).

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

4385365728 is a wasteful number, since it uses less digits than its factorization.

4385365728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45680906 (or 45680898 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 51.

The square root of 4385365728 is about 66222.0939566245. The cubic root of 4385365728 is about 1636.8238309085.

The spelling of 4385365728 in words is "four billion, three hundred eighty-five million, three hundred sixty-five thousand, seven hundred twenty-eight".