57728602388 has 12 divisors (see below), whose sum is σ = 101027585652. Its totient is φ = 28863577920.

The previous prime is 57728602387. The next prime is 57728602409. The reversal of 57728602388 is 88320682775.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 25396247044 + 32332355344 = 159362^2 + 179812^2 .

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57728602381) 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, 24728 + ... + 340688.

It is an arithmetic number, because the mean of its divisors is an integer number (8418965471).

Almost surely, 2^57728602388 is an apocalyptic number.

It is an amenable number.

57728602388 is a deficient number, since it is larger than the sum of its proper divisors (43298983264).

57728602388 is a wasteful number, since it uses less digits than its factorization.

57728602388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361642 (or 361640 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 56.

The spelling of 57728602388 in words is "fifty-seven billion, seven hundred twenty-eight million, six hundred two thousand, three hundred eighty-eight".