26868739 has 4 divisors (see below), whose sum is σ = 26881624. Its totient is φ = 26855856.

The previous prime is 26868733. The next prime is 26868763. The reversal of 26868739 is 93786862.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26868739 - 2²¹ = 24771587 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 26868692 and 26868701.

It is not an unprimeable number, because it can be changed into a prime (26868733) 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 3 ways as a sum of consecutive naturals, for example, 2517 + ... + 7750.

It is an arithmetic number, because the mean of its divisors is an integer number (6720406).

Almost surely, 2^26868739 is an apocalyptic number.

26868739 is a deficient number, since it is larger than the sum of its proper divisors (12885).

26868739 is a wasteful number, since it uses less digits than its factorization.

26868739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12884.

The product of its digits is 870912, while the sum is 49.

The square root of 26868739 is about 5183.5064386957. The cubic root of 26868739 is about 299.5130582014.

The spelling of 26868739 in words is "twenty-six million, eight hundred sixty-eight thousand, seven hundred thirty-nine".