11288261 has 4 divisors (see below), whose sum is σ = 11882400. Its totient is φ = 10694124.

The previous prime is 11288237. The next prime is 11288267. The reversal of 11288261 is 16288211.

11288261 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11288261 - 2⁶ = 11288197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11288267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297041 + ... + 297078.

It is an arithmetic number, because the mean of its divisors is an integer number (2970600).

Almost surely, 2^11288261 is an apocalyptic number.

It is an amenable number.

11288261 is a deficient number, since it is larger than the sum of its proper divisors (594139).

11288261 is an equidigital number, since it uses as much as digits as its factorization.

11288261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594138.

The product of its digits is 1536, while the sum is 29.

The square root of 11288261 is about 3359.8007381391. The cubic root of 11288261 is about 224.3239691987.

The spelling of 11288261 in words is "eleven million, two hundred eighty-eight thousand, two hundred sixty-one".