26009145 has 12 divisors (see below), whose sum is σ = 45082596. Its totient is φ = 13871520.

The previous prime is 26009141. The next prime is 26009153. The reversal of 26009145 is 54190062.

It can be written as a sum of positive squares in 2 ways, for example, as 15492096 + 10517049 = 3936^2 + 3243^2 .

It is not a de Polignac number, because 26009145 - 2² = 26009141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26009141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 288946 + ... + 289035.

It is an arithmetic number, because the mean of its divisors is an integer number (3756883).

Almost surely, 2^26009145 is an apocalyptic number.

It is an amenable number.

26009145 is a deficient number, since it is larger than the sum of its proper divisors (19073451).

26009145 is a wasteful number, since it uses less digits than its factorization.

26009145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577992 (or 577989 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 26009145 is about 5099.9161757817. The cubic root of 26009145 is about 296.2843361366.

The spelling of 26009145 in words is "twenty-six million, nine thousand, one hundred forty-five".