26440563 has 8 divisors (see below), whose sum is σ = 35679168. Its totient is φ = 17414504.

The previous prime is 26440543. The next prime is 26440577. The reversal of 26440563 is 36504462.

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 26440563 - 2⁸ = 26440307 is a prime.

It is a super-3 number, since 3×26440563³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26440563.

It is not an unprimeable number, because it can be changed into a prime (26440543) 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, 52845 + ... + 53342.

It is an arithmetic number, because the mean of its divisors is an integer number (4459896).

Almost surely, 2^26440563 is an apocalyptic number.

26440563 is a deficient number, since it is larger than the sum of its proper divisors (9238605).

26440563 is a wasteful number, since it uses less digits than its factorization.

26440563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106273.

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 26440563 is about 5142.0387979867. The cubic root of 26440563 is about 297.9135336123.

The spelling of 26440563 in words is "twenty-six million, four hundred forty thousand, five hundred sixty-three".