57728077 has 16 divisors (see below), whose sum is σ = 64991808. Its totient is φ = 50826880.

The previous prime is 57728057. The next prime is 57728087. The reversal of 57728077 is 77082775.

It is a cyclic number.

It is not a de Polignac number, because 57728077 - 2¹¹ = 57726029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57728057) 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, 47793 + ... + 48985.

It is an arithmetic number, because the mean of its divisors is an integer number (4061988).

Almost surely, 2^57728077 is an apocalyptic number.

It is an amenable number.

57728077 is a deficient number, since it is larger than the sum of its proper divisors (7263731).

57728077 is a wasteful number, since it uses less digits than its factorization.

57728077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340.

The product of its (nonzero) digits is 192080, while the sum is 43.

The square root of 57728077 is about 7597.8995123652. The cubic root of 57728077 is about 386.4817849628.

The spelling of 57728077 in words is "fifty-seven million, seven hundred twenty-eight thousand, seventy-seven".