26742891 has 8 divisors (see below), whose sum is σ = 40751104. Its totient is φ = 15281640.

The previous prime is 26742869. The next prime is 26742929. The reversal of 26742891 is 19824762.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 26742891 - 2⁷ = 26742763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26742851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 636715 + ... + 636756.

It is an arithmetic number, because the mean of its divisors is an integer number (5093888).

Almost surely, 2^26742891 is an apocalyptic number.

26742891 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

26742891 is a deficient number, since it is larger than the sum of its proper divisors (14008213).

26742891 is a wasteful number, since it uses less digits than its factorization.

26742891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273481.

The product of its digits is 48384, while the sum is 39.

The square root of 26742891 is about 5171.3529177576. The cubic root of 26742891 is about 299.0447057161.

It can be divided in two parts, 2674 and 2891, that added together give a triangular number (5565 = T₁₀₅).

The spelling of 26742891 in words is "twenty-six million, seven hundred forty-two thousand, eight hundred ninety-one".