26540243 has 8 divisors (see below), whose sum is σ = 27389040. Its totient is φ = 25701120.

The previous prime is 26540237. The next prime is 26540257. The reversal of 26540243 is 34204562.

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 26540243 - 2¹⁸ = 26278099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26540203) 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, 3371 + ... + 8027.

It is an arithmetic number, because the mean of its divisors is an integer number (3423630).

Almost surely, 2^26540243 is an apocalyptic number.

26540243 is a deficient number, since it is larger than the sum of its proper divisors (848797).

26540243 is a wasteful number, since it uses less digits than its factorization.

26540243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4837.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 26540243 is about 5151.7223333561. The cubic root of 26540243 is about 298.2874386780.

The spelling of 26540243 in words is "twenty-six million, five hundred forty thousand, two hundred forty-three".