57020020328 has 16 divisors (see below), whose sum is σ = 106917454980. Its totient is φ = 28508699008.

The previous prime is 57020020279. The next prime is 57020020403. The reversal of 57020020328 is 82302002075.

It can be written as a sum of positive squares in 2 ways, for example, as 55461192004 + 1558828324 = 235502^2 + 39482^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 57020020328.

It is an unprimeable number.

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, 35150 + ... + 339522.

Almost surely, 2^57020020328 is an apocalyptic number.

It is an amenable number.

57020020328 is a deficient number, since it is larger than the sum of its proper divisors (49897434652).

57020020328 is a wasteful number, since it uses less digits than its factorization.

57020020328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327796 (or 327792 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The spelling of 57020020328 in words is "fifty-seven billion, twenty million, twenty thousand, three hundred twenty-eight".