26198128 has 20 divisors (see below), whose sum is σ = 55373688. Its totient is φ = 11908160.

The previous prime is 26198113. The next prime is 26198141. The reversal of 26198128 is 82189162.

It is a zygodrome in base 2.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 74251 + ... + 74602.

Almost surely, 2^26198128 is an apocalyptic number.

It is an amenable number.

26198128 is an abundant number, since it is smaller than the sum of its proper divisors (29175560).

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

26198128 is a wasteful number, since it uses less digits than its factorization.

26198128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148872 (or 148866 counting only the distinct ones).

The product of its digits is 13824, while the sum is 37.

The square root of 26198128 is about 5118.4106908297. The cubic root of 26198128 is about 297.0002078396. Note that the first 3 decimals are identical.

It can be divided in two parts, 261 and 98128, that added together give a palindrome (98389).

The spelling of 26198128 in words is "twenty-six million, one hundred ninety-eight thousand, one hundred twenty-eight".