11240643 has 16 divisors (see below), whose sum is σ = 15282176. Its totient is φ = 7348320.

The previous prime is 11240641. The next prime is 11240659. The reversal of 11240643 is 34604211.

It is not a de Polignac number, because 11240643 - 2¹ = 11240641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11240641) 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, 62013 + ... + 62193.

It is an arithmetic number, because the mean of its divisors is an integer number (955136).

Almost surely, 2^11240643 is an apocalyptic number.

11240643 is a deficient number, since it is larger than the sum of its proper divisors (4041533).

11240643 is a wasteful number, since it uses less digits than its factorization.

11240643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 11240643 is about 3352.7068168869. The cubic root of 11240643 is about 224.0080978684.

Adding to 11240643 its reverse (34604211), we get a palindrome (45844854).

It can be divided in two parts, 112 and 40643, that added together give a triangular number (40755 = T₂₈₅).

The spelling of 11240643 in words is "eleven million, two hundred forty thousand, six hundred forty-three".