26728799 has 4 divisors (see below), whose sum is σ = 26740560. Its totient is φ = 26717040.

The previous prime is 26728787. The next prime is 26728831. The reversal of 26728799 is 99782762.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 26728799 - 2⁸ = 26728543 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 (26728729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1262 + ... + 7419.

It is an arithmetic number, because the mean of its divisors is an integer number (6685140).

Almost surely, 2^26728799 is an apocalyptic number.

26728799 is a deficient number, since it is larger than the sum of its proper divisors (11761).

26728799 is an equidigital number, since it uses as much as digits as its factorization.

26728799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11760.

The product of its digits is 762048, while the sum is 50.

The square root of 26728799 is about 5169.9902320991. The cubic root of 26728799 is about 298.9921699049.

The spelling of 26728799 in words is "twenty-six million, seven hundred twenty-eight thousand, seven hundred ninety-nine".