11491730 has 16 divisors (see below), whose sum is σ = 20724120. Its totient is φ = 4588032.

The previous prime is 11491717. The next prime is 11491741. The reversal of 11491730 is 3719411.

It can be written as a sum of positive squares in 4 ways, for example, as 7252249 + 4239481 = 2693^2 + 2059^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11491730.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8672 + ... + 9908.

Almost surely, 2^11491730 is an apocalyptic number.

11491730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11491730 is a deficient number, since it is larger than the sum of its proper divisors (9232390).

11491730 is a wasteful number, since it uses less digits than its factorization.

11491730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2173.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 11491730 is about 3389.9454272894. The cubic root of 11491730 is about 225.6637519348.

It can be divided in two parts, 11491 and 730, that added together give a palindrome (12221).

The spelling of 11491730 in words is "eleven million, four hundred ninety-one thousand, seven hundred thirty".