11724291 has 16 divisors (see below), whose sum is σ = 17740800. Its totient is φ = 7649064.

The previous prime is 11724283. The next prime is 11724299. The reversal of 11724291 is 19242711.

It is an interprime number because it is at equal distance from previous prime (11724283) and next prime (11724299).

It is not a de Polignac number, because 11724291 - 2³ = 11724283 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11724299) 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, 3351 + ... + 5888.

It is an arithmetic number, because the mean of its divisors is an integer number (1108800).

Almost surely, 2^11724291 is an apocalyptic number.

11724291 is a deficient number, since it is larger than the sum of its proper divisors (6016509).

11724291 is an equidigital number, since it uses as much as digits as its factorization.

11724291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9295 (or 9289 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 11724291 is about 3424.0752036134. The cubic root of 11724291 is about 227.1758681616.

The spelling of 11724291 in words is "eleven million, seven hundred twenty-four thousand, two hundred ninety-one".