26005881 has 16 divisors (see below), whose sum is σ = 38543040. Its totient is φ = 15462720.

The previous prime is 26005877. The next prime is 26005897. The reversal of 26005881 is 18850062.

It is not a de Polignac number, because 26005881 - 2² = 26005877 is a prime.

It is a super-2 number, since 2×26005881² = 1352611693172322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26005381) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5686 + ... + 9183.

It is an arithmetic number, because the mean of its divisors is an integer number (2408940).

Almost surely, 2^26005881 is an apocalyptic number.

It is an amenable number.

26005881 is a deficient number, since it is larger than the sum of its proper divisors (12537159).

26005881 is a wasteful number, since it uses less digits than its factorization.

26005881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14936.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 26005881 is about 5099.5961604817. The cubic root of 26005881 is about 296.2719416176.

The spelling of 26005881 in words is "twenty-six million, five thousand, eight hundred eighty-one".