26728073 has 4 divisors (see below), whose sum is σ = 26739780. Its totient is φ = 26716368.

The previous prime is 26728049. The next prime is 26728081. The reversal of 26728073 is 37082762.

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 can be written as a sum of positive squares in 2 ways, for example, as 11580409 + 15147664 = 3403^2 + 3892^2 .

It is a cyclic number.

It is not a de Polignac number, because 26728073 - 2¹⁴ = 26711689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26728033) 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, 1190 + ... + 7407.

It is an arithmetic number, because the mean of its divisors is an integer number (6684945).

Almost surely, 2^26728073 is an apocalyptic number.

It is an amenable number.

26728073 is a deficient number, since it is larger than the sum of its proper divisors (11707).

26728073 is an equidigital number, since it uses as much as digits as its factorization.

26728073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11706.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 26728073 is about 5169.9200187237. The cubic root of 26728073 is about 298.9894628338.

The spelling of 26728073 in words is "twenty-six million, seven hundred twenty-eight thousand, seventy-three".