28857334356164 has 12 divisors (see below), whose sum is σ = 51865209045804. Its totient is φ = 14038703200224.

The previous prime is 28857334356143. The next prime is 28857334356181. The reversal of 28857334356164 is 46165343375882.

It can be written as a sum of positive squares in 2 ways, for example, as 25482001120900 + 3375333235264 = 5047970^2 + 1837208^2 .

It is a super-2 number, since 2×28857334356164² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28857334356164.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97490994299 + ... + 97490994594.

It is an arithmetic number, because the mean of its divisors is an integer number (4322100753817).

Almost surely, 2^{28857334356164} is an apocalyptic number.

It is an amenable number.

28857334356164 is a deficient number, since it is larger than the sum of its proper divisors (23007874689640).

28857334356164 is a wasteful number, since it uses less digits than its factorization.

28857334356164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194981988934 (or 194981988932 counting only the distinct ones).

The product of its digits is 348364800, while the sum is 65.

The spelling of 28857334356164 in words is "twenty-eight trillion, eight hundred fifty-seven billion, three hundred thirty-four million, three hundred fifty-six thousand, one hundred sixty-four".