26128868 has 12 divisors (see below), whose sum is σ = 45808812. Its totient is φ = 13040640.

The previous prime is 26128859. The next prime is 26128871. The reversal of 26128868 is 86882162.

It can be written as a sum of positive squares in 2 ways, for example, as 15618304 + 10510564 = 3952^2 + 3242^2 .

It is a super-2 number, since 2×26128868² = 1365435485922848, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3353 + ... + 7968.

It is an arithmetic number, because the mean of its divisors is an integer number (3817401).

Almost surely, 2^26128868 is an apocalyptic number.

It is an amenable number.

26128868 is a deficient number, since it is larger than the sum of its proper divisors (19679944).

26128868 is a wasteful number, since it uses less digits than its factorization.

26128868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11902 (or 11900 counting only the distinct ones).

The product of its digits is 73728, while the sum is 41.

The square root of 26128868 is about 5111.6404411891. The cubic root of 26128868 is about 296.7382503409.

The spelling of 26128868 in words is "twenty-six million, one hundred twenty-eight thousand, eight hundred sixty-eight".