68857128 has 40 divisors (see below), whose sum is σ = 192865530. Its totient is φ = 22952160.

The previous prime is 68857093. The next prime is 68857133. The reversal of 68857128 is 82175886.

It can be written as a sum of positive squares in only one way, i.e., 68856804 + 324 = 8298^2 + 18^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 52483 + ... + 53778.

Almost surely, 2^68857128 is an apocalyptic number.

It is an amenable number.

68857128 is an abundant number, since it is smaller than the sum of its proper divisors (124008402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68857128 is a wasteful number, since it uses less digits than its factorization.

68857128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106279 (or 106266 counting only the distinct ones).

The product of its digits is 215040, while the sum is 45.

The square root of 68857128 is about 8298.0195227536. The cubic root of 68857128 is about 409.8733060854.

The spelling of 68857128 in words is "sixty-eight million, eight hundred fifty-seven thousand, one hundred twenty-eight".