26742689 has 4 divisors (see below), whose sum is σ = 27364656. Its totient is φ = 26120724.

The previous prime is 26742673. The next prime is 26742691. The reversal of 26742689 is 98624762.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26742689 - 2⁴ = 26742673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26742589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310919 + ... + 311004.

It is an arithmetic number, because the mean of its divisors is an integer number (6841164).

Almost surely, 2^26742689 is an apocalyptic number.

It is an amenable number.

26742689 is a deficient number, since it is larger than the sum of its proper divisors (621967).

26742689 is an equidigital number, since it uses as much as digits as its factorization.

26742689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621966.

The product of its digits is 290304, while the sum is 44.

The square root of 26742689 is about 5171.3333870483. Note that the first 4 decimals coincide. The cubic root of 26742689 is about 299.0439527785.

The spelling of 26742689 in words is "twenty-six million, seven hundred forty-two thousand, six hundred eighty-nine".