26308089 has 6 divisors (see below), whose sum is σ = 38000586. Its totient is φ = 17538720.

The previous prime is 26308069. The next prime is 26308091. The reversal of 26308089 is 98080362.

It can be written as a sum of positive squares in only one way, i.e., 20548089 + 5760000 = 4533^2 + 2400^2 .

It is not a de Polignac number, because 26308089 - 2⁸ = 26307833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26308039) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1461552 + ... + 1461569.

It is an arithmetic number, because the mean of its divisors is an integer number (6333431).

Almost surely, 2^26308089 is an apocalyptic number.

It is an amenable number.

26308089 is a deficient number, since it is larger than the sum of its proper divisors (11692497).

26308089 is a wasteful number, since it uses less digits than its factorization.

26308089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2923127 (or 2923124 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 26308089 is about 5129.1411561781. The cubic root of 26308089 is about 297.4151592927.

It can be divided in two parts, 263080 and 89, that added together give a square (263169 = 513²).

The spelling of 26308089 in words is "twenty-six million, three hundred eight thousand, eighty-nine".