57428755528 has 8 divisors (see below), whose sum is σ = 107678916630. Its totient is φ = 28714377760.

The previous prime is 57428755493. The next prime is 57428755529. The reversal of 57428755528 is 82555782475.

It can be written as a sum of positive squares in only one way, i.e., 39617717764 + 17811037764 = 199042^2 + 133458^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×57428755528² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57428755529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3589297213 + ... + 3589297228.

Almost surely, 2^57428755528 is an apocalyptic number.

It is an amenable number.

57428755528 is a deficient number, since it is larger than the sum of its proper divisors (50250161102).

57428755528 is a wasteful number, since it uses less digits than its factorization.

57428755528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7178594447 (or 7178594443 counting only the distinct ones).

The product of its digits is 31360000, while the sum is 58.

The spelling of 57428755528 in words is "fifty-seven billion, four hundred twenty-eight million, seven hundred fifty-five thousand, five hundred twenty-eight".