57728877 has 4 divisors (see below), whose sum is σ = 76971840. Its totient is φ = 38485916.

The previous prime is 57728857. The next prime is 57728947. The reversal of 57728877 is 77882775.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57728877 - 2¹² = 57724781 is a prime.

It is a super-2 number, since 2×57728877² = 6665246479362258, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 9621477 + ... + 9621482.

It is an arithmetic number, because the mean of its divisors is an integer number (19242960).

Almost surely, 2^57728877 is an apocalyptic number.

It is an amenable number.

57728877 is a deficient number, since it is larger than the sum of its proper divisors (19242963).

57728877 is a wasteful number, since it uses less digits than its factorization.

57728877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19242962.

The product of its digits is 1536640, while the sum is 51.

The square root of 57728877 is about 7597.9521583121. The cubic root of 57728877 is about 386.4835702524.

The spelling of 57728877 in words is "fifty-seven million, seven hundred twenty-eight thousand, eight hundred seventy-seven".