26838491 has 4 divisors (see below), whose sum is σ = 26868072. Its totient is φ = 26808912.

The previous prime is 26838479. The next prime is 26838503. The reversal of 26838491 is 19483862.

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

It is an interprime number because it is at equal distance from previous prime (26838479) and next prime (26838503).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26838491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26838191) 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, 13385 + ... + 15258.

It is an arithmetic number, because the mean of its divisors is an integer number (6717018).

Almost surely, 2^26838491 is an apocalyptic number.

26838491 is a deficient number, since it is larger than the sum of its proper divisors (29581).

26838491 is an equidigital number, since it uses as much as digits as its factorization.

26838491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29580.

The product of its digits is 82944, while the sum is 41.

The square root of 26838491 is about 5180.5879010012. The cubic root of 26838491 is about 299.4006218020.

The spelling of 26838491 in words is "twenty-six million, eight hundred thirty-eight thousand, four hundred ninety-one".