26881164 has 36 divisors (see below), whose sum is σ = 68108040. Its totient is φ = 8939520.

The previous prime is 26881163. The next prime is 26881187. The reversal of 26881164 is 46118862.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (26881163) 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 11 ways as a sum of consecutive naturals, for example, 27199 + ... + 28169.

It is an arithmetic number, because the mean of its divisors is an integer number (1891890).

Almost surely, 2^26881164 is an apocalyptic number.

It is an amenable number.

26881164 is an abundant number, since it is smaller than the sum of its proper divisors (41226876).

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

26881164 is a wasteful number, since it uses less digits than its factorization.

26881164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1750 (or 1745 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 26881164 is about 5184.7048131981. The cubic root of 26881164 is about 299.5592193586.

The spelling of 26881164 in words is "twenty-six million, eight hundred eighty-one thousand, one hundred sixty-four".