26681745 has 32 divisors (see below), whose sum is σ = 43868160. Its totient is φ = 13844160.

The previous prime is 26681723. The next prime is 26681749. The reversal of 26681745 is 54718662.

It is not a de Polignac number, because 26681745 - 2⁸ = 26681489 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26681749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 139600 + ... + 139790.

It is an arithmetic number, because the mean of its divisors is an integer number (1370880).

Almost surely, 2^26681745 is an apocalyptic number.

It is an amenable number.

26681745 is a deficient number, since it is larger than the sum of its proper divisors (17186415).

26681745 is a wasteful number, since it uses less digits than its factorization.

26681745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405.

The product of its digits is 80640, while the sum is 39.

The square root of 26681745 is about 5165.4375419707. The cubic root of 26681745 is about 298.8166159227.

The spelling of 26681745 in words is "twenty-six million, six hundred eighty-one thousand, seven hundred forty-five".