26240403 has 16 divisors (see below), whose sum is σ = 40494080. Its totient is φ = 14803776.

The previous prime is 26240399. The next prime is 26240407. The reversal of 26240403 is 30404262.

It is an interprime number because it is at equal distance from previous prime (26240399) and next prime (26240407).

It is not a de Polignac number, because 26240403 - 2² = 26240399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26240403.

It is not an unprimeable number, because it can be changed into a prime (26240407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6250 + ... + 9567.

It is an arithmetic number, because the mean of its divisors is an integer number (2530880).

Almost surely, 2^26240403 is an apocalyptic number.

26240403 is a deficient number, since it is larger than the sum of its proper divisors (14253677).

26240403 is a wasteful number, since it uses less digits than its factorization.

26240403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15906.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 26240403 is about 5122.5387260615. The cubic root of 26240403 is about 297.1598749257.

Adding to 26240403 its reverse (30404262), we get a palindrome (56644665).

The spelling of 26240403 in words is "twenty-six million, two hundred forty thousand, four hundred three".