57728847 has 8 divisors (see below), whose sum is σ = 83969280. Its totient is φ = 34987160.

The previous prime is 57728791. The next prime is 57728857. The reversal of 57728847 is 74882775.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57728847 - 2⁸ = 57728591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57728796 and 57728805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57728857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 874647 + ... + 874712.

It is an arithmetic number, because the mean of its divisors is an integer number (10496160).

Almost surely, 2^57728847 is an apocalyptic number.

57728847 is a deficient number, since it is larger than the sum of its proper divisors (26240433).

57728847 is a wasteful number, since it uses less digits than its factorization.

57728847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749373.

The product of its digits is 878080, while the sum is 48.

The square root of 57728847 is about 7597.9501840957. The cubic root of 57728847 is about 386.4835033043.

The spelling of 57728847 in words is "fifty-seven million, seven hundred twenty-eight thousand, eight hundred forty-seven".