26112009 has 16 divisors (see below), whose sum is σ = 43407360. Its totient is φ = 13564560.

The previous prime is 26112007. The next prime is 26112011. The reversal of 26112009 is 90021162.

It is an interprime number because it is at equal distance from previous prime (26112007) and next prime (26112011).

It is not a de Polignac number, because 26112009 - 2¹ = 26112007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26112007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56289 + ... + 56750.

It is an arithmetic number, because the mean of its divisors is an integer number (2712960).

Almost surely, 2^26112009 is an apocalyptic number.

It is an amenable number.

26112009 is a deficient number, since it is larger than the sum of its proper divisors (17295351).

26112009 is a wasteful number, since it uses less digits than its factorization.

26112009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113060.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 26112009 is about 5109.9910958827. The cubic root of 26112009 is about 296.6744156261.

The spelling of 26112009 in words is "twenty-six million, one hundred twelve thousand, nine".