26189955 has 48 divisors (see below), whose sum is σ = 49986144. Its totient is φ = 12579840.

The previous prime is 26189921. The next prime is 26189959. The reversal of 26189955 is 55998162.

It is not a de Polignac number, because 26189955 - 2¹⁰ = 26188931 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 26189955.

It is not an unprimeable number, because it can be changed into a prime (26189959) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 77547 + ... + 77883.

It is an arithmetic number, because the mean of its divisors is an integer number (1041378).

Almost surely, 2^26189955 is an apocalyptic number.

26189955 is a deficient number, since it is larger than the sum of its proper divisors (23796189).

26189955 is a wasteful number, since it uses less digits than its factorization.

26189955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516 (or 513 counting only the distinct ones).

The product of its digits is 194400, while the sum is 45.

The square root of 26189955 is about 5117.6122361898. The cubic root of 26189955 is about 296.9693196890.

It can be divided in two parts, 26 and 189955, that added together give a palindrome (189981).

The spelling of 26189955 in words is "twenty-six million, one hundred eighty-nine thousand, nine hundred fifty-five".