26266989 has 48 divisors (see below), whose sum is σ = 45111168. Its totient is φ = 13483008.

The previous prime is 26266979. The next prime is 26266991. The reversal of 26266989 is 98966262.

It is not a de Polignac number, because 26266989 - 2¹¹ = 26264941 is a prime.

It is a super-2 number, since 2×26266989² = 1379909422252242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26266909) 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 47 ways as a sum of consecutive naturals, for example, 57249 + ... + 57705.

It is an arithmetic number, because the mean of its divisors is an integer number (939816).

Almost surely, 2^26266989 is an apocalyptic number.

It is an amenable number.

26266989 is a deficient number, since it is larger than the sum of its proper divisors (18844179).

26266989 is a wasteful number, since it uses less digits than its factorization.

26266989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514 (or 507 counting only the distinct ones).

The product of its digits is 559872, while the sum is 48.

The square root of 26266989 is about 5125.1330714431. The cubic root of 26266989 is about 297.2601989162.

The spelling of 26266989 in words is "twenty-six million, two hundred sixty-six thousand, nine hundred eighty-nine".