57728093 has 2 divisors, whose sum is σ = 57728094. Its totient is φ = 57728092.

The previous prime is 57728087. The next prime is 57728117. The reversal of 57728093 is 39082775.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56957209 + 770884 = 7547^2 + 878^2 .

It is a cyclic number.

It is not a de Polignac number, because 57728093 - 2⁸ = 57727837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57728093.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57728003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28864046 + 28864047.

It is an arithmetic number, because the mean of its divisors is an integer number (28864047).

Almost surely, 2^57728093 is an apocalyptic number.

It is an amenable number.

57728093 is a deficient number, since it is larger than the sum of its proper divisors (1).

57728093 is an equidigital number, since it uses as much as digits as its factorization.

57728093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 57728093 is about 7597.9005652878. The cubic root of 57728093 is about 386.4818206688.

The spelling of 57728093 in words is "fifty-seven million, seven hundred twenty-eight thousand, ninety-three".