11187293 has 12 divisors (see below), whose sum is σ = 12352500. Its totient is φ = 10123776.

The previous prime is 11187289. The next prime is 11187313. The reversal of 11187293 is 39278111.

It can be written as a sum of positive squares in 6 ways, for example, as 1119364 + 10067929 = 1058^2 + 3173^2 .

It is not a de Polignac number, because 11187293 - 2² = 11187289 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11187203) 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 11 ways as a sum of consecutive naturals, for example, 8333 + ... + 9581.

It is an arithmetic number, because the mean of its divisors is an integer number (1029375).

Almost surely, 2^11187293 is an apocalyptic number.

11187293 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11187293 is a deficient number, since it is larger than the sum of its proper divisors (1165207).

11187293 is a wasteful number, since it uses less digits than its factorization.

11187293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328 (or 1315 counting only the distinct ones).

The product of its digits is 3024, while the sum is 32.

The square root of 11187293 is about 3344.7410961089. The cubic root of 11187293 is about 223.6531422274.

The spelling of 11187293 in words is "eleven million, one hundred eighty-seven thousand, two hundred ninety-three".