26316289 has 8 divisors (see below), whose sum is σ = 27938088. Its totient is φ = 24702720.

The previous prime is 26316271. The next prime is 26316299. The reversal of 26316289 is 98261362.

It can be written as a sum of positive squares in 4 ways, for example, as 2958400 + 23357889 = 1720^2 + 4833^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26316289 - 2¹³ = 26308097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26316259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5319 + ... + 8995.

It is an arithmetic number, because the mean of its divisors is an integer number (3492261).

Almost surely, 2^26316289 is an apocalyptic number.

It is an amenable number.

26316289 is a deficient number, since it is larger than the sum of its proper divisors (1621799).

26316289 is a wasteful number, since it uses less digits than its factorization.

26316289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4115.

The product of its digits is 31104, while the sum is 37.

The square root of 26316289 is about 5129.9404479974. The cubic root of 26316289 is about 297.4460566460.

The spelling of 26316289 in words is "twenty-six million, three hundred sixteen thousand, two hundred eighty-nine".