11288643 has 4 divisors (see below), whose sum is σ = 15051528. Its totient is φ = 7525760.

The previous prime is 11288633. The next prime is 11288677. The reversal of 11288643 is 34688211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11288643 - 2⁵ = 11288611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11288623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1881438 + ... + 1881443.

It is an arithmetic number, because the mean of its divisors is an integer number (3762882).

Almost surely, 2^11288643 is an apocalyptic number.

11288643 is a deficient number, since it is larger than the sum of its proper divisors (3762885).

11288643 is an equidigital number, since it uses as much as digits as its factorization.

11288643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3762884.

The product of its digits is 9216, while the sum is 33.

The square root of 11288643 is about 3359.8575862676. The cubic root of 11288643 is about 224.3264995793.

The spelling of 11288643 in words is "eleven million, two hundred eighty-eight thousand, six hundred forty-three".