26117965 has 16 divisors (see below), whose sum is σ = 32578560. Its totient is φ = 20079360.

The previous prime is 26117941. The next prime is 26117969. The reversal of 26117965 is 56971162.

It is not a de Polignac number, because 26117965 - 2⁹ = 26117453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26117969) 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 15 ways as a sum of consecutive naturals, for example, 25381 + ... + 26389.

It is an arithmetic number, because the mean of its divisors is an integer number (2036160).

Almost surely, 2^26117965 is an apocalyptic number.

It is an amenable number.

26117965 is a deficient number, since it is larger than the sum of its proper divisors (6460595).

26117965 is a wasteful number, since it uses less digits than its factorization.

26117965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212.

The product of its digits is 22680, while the sum is 37.

The square root of 26117965 is about 5110.5738425347. The cubic root of 26117965 is about 296.6969704908.

The spelling of 26117965 in words is "twenty-six million, one hundred seventeen thousand, nine hundred sixty-five".