26397397 has 8 divisors (see below), whose sum is σ = 28853216. Its totient is φ = 24002352.

The previous prime is 26397383. The next prime is 26397407. The reversal of 26397397 is 79379362.

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

It is a cyclic number.

It is not a de Polignac number, because 26397397 - 2¹⁵ = 26364629 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 (26397097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14283 + ... + 16024.

It is an arithmetic number, because the mean of its divisors is an integer number (3606652).

Almost surely, 2^26397397 is an apocalyptic number.

It is an amenable number.

26397397 is a deficient number, since it is larger than the sum of its proper divisors (2455819).

26397397 is a wasteful number, since it uses less digits than its factorization.

26397397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30387.

The product of its digits is 428652, while the sum is 46.

The square root of 26397397 is about 5137.8397211279. The cubic root of 26397397 is about 297.7513240043.

The spelling of 26397397 in words is "twenty-six million, three hundred ninety-seven thousand, three hundred ninety-seven".