26305861 has 16 divisors (see below), whose sum is σ = 28563840. Its totient is φ = 24148800.

The previous prime is 26305849. The next prime is 26305901. The reversal of 26305861 is 16850362.

It is a cyclic number.

It is not a de Polignac number, because 26305861 - 2¹¹ = 26303813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26305841) 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 15 ways as a sum of consecutive naturals, for example, 151971 + ... + 152143.

It is an arithmetic number, because the mean of its divisors is an integer number (1785240).

Almost surely, 2^26305861 is an apocalyptic number.

It is an amenable number.

26305861 is a deficient number, since it is larger than the sum of its proper divisors (2257979).

26305861 is a wasteful number, since it uses less digits than its factorization.

26305861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 26305861 is about 5128.9239612223. The cubic root of 26305861 is about 297.4067631465.

The spelling of 26305861 in words is "twenty-six million, three hundred five thousand, eight hundred sixty-one".