26538865 has 8 divisors (see below), whose sum is σ = 32250240. Its totient is φ = 20962032.

The previous prime is 26538859. The next prime is 26538881. The reversal of 26538865 is 56883562.

It is a happy number.

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 26538865 - 2⁵ = 26538833 is a prime.

It is a super-2 number, since 2×26538865² = 1408622710976450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33199 + ... + 33988.

It is an arithmetic number, because the mean of its divisors is an integer number (4031280).

Almost surely, 2^26538865 is an apocalyptic number.

It is an amenable number.

26538865 is a deficient number, since it is larger than the sum of its proper divisors (5711375).

26538865 is an equidigital number, since it uses as much as digits as its factorization.

26538865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67271.

The product of its digits is 345600, while the sum is 43.

The square root of 26538865 is about 5151.5885899400. The cubic root of 26538865 is about 298.2822761128.

The spelling of 26538865 in words is "twenty-six million, five hundred thirty-eight thousand, eight hundred sixty-five".