26742869 has 2 divisors, whose sum is σ = 26742870. Its totient is φ = 26742868.

The previous prime is 26742851. The next prime is 26742929. The reversal of 26742869 is 96824762.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25150225 + 1592644 = 5015^2 + 1262^2 .

It is a cyclic number.

It is not a de Polignac number, because 26742869 - 2⁸ = 26742613 is a prime.

It is a super-2 number, since 2×26742869² = 1430362084702322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26742839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13371434 + 13371435.

It is an arithmetic number, because the mean of its divisors is an integer number (13371435).

Almost surely, 2^26742869 is an apocalyptic number.

It is an amenable number.

26742869 is a deficient number, since it is larger than the sum of its proper divisors (1).

26742869 is an equidigital number, since it uses as much as digits as its factorization.

26742869 is an odious number, because the sum of its binary digits is odd.

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

The square root of 26742869 is about 5171.3507906542. The cubic root of 26742869 is about 299.0446237131.

The spelling of 26742869 in words is "twenty-six million, seven hundred forty-two thousand, eight hundred sixty-nine".