26456791 has 4 divisors (see below), whose sum is σ = 26469352. Its totient is φ = 26444232.

The previous prime is 26456789. The next prime is 26456809. The reversal of 26456791 is 19765462.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 19765462 = 2 ⋅9882731.

It is a cyclic number.

It is not a de Polignac number, because 26456791 - 2¹ = 26456789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26456711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2265 + ... + 7618.

It is an arithmetic number, because the mean of its divisors is an integer number (6617338).

Almost surely, 2^26456791 is an apocalyptic number.

26456791 is a deficient number, since it is larger than the sum of its proper divisors (12561).

26456791 is an equidigital number, since it uses as much as digits as its factorization.

26456791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12560.

The product of its digits is 90720, while the sum is 40.

The square root of 26456791 is about 5143.6165292525. The cubic root of 26456791 is about 297.9744696835.

The spelling of 26456791 in words is "twenty-six million, four hundred fifty-six thousand, seven hundred ninety-one".