28857171746 has 32 divisors (see below), whose sum is σ = 46803899520. Its totient is φ = 13264948224.

The previous prime is 28857171703. The next prime is 28857171787. The reversal of 28857171746 is 64717175882.

It is a super-2 number, since 2×28857171746² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28857171691 and 28857171700.

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 15 ways as a sum of consecutive naturals, for example, 10480706 + ... + 10483458.

It is an arithmetic number, because the mean of its divisors is an integer number (1462621860).

Almost surely, 2^28857171746 is an apocalyptic number.

28857171746 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28857171746 is a deficient number, since it is larger than the sum of its proper divisors (17946727774).

28857171746 is a wasteful number, since it uses less digits than its factorization.

28857171746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4250.

The product of its digits is 5268480, while the sum is 56.

The spelling of 28857171746 in words is "twenty-eight billion, eight hundred fifty-seven million, one hundred seventy-one thousand, seven hundred forty-six".