11724345 has 20 divisors (see below), whose sum is σ = 21017700. Its totient is φ = 6252768.

The previous prime is 11724313. The next prime is 11724347. The reversal of 11724345 is 54342711.

It can be written as a sum of positive squares in 2 ways, for example, as 8982009 + 2742336 = 2997^2 + 1656^2 .

It is not a de Polignac number, because 11724345 - 2⁵ = 11724313 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (11724347) 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 19 ways as a sum of consecutive naturals, for example, 14070 + ... + 14879.

It is an arithmetic number, because the mean of its divisors is an integer number (1050885).

Almost surely, 2^11724345 is an apocalyptic number.

11724345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11724345 is a deficient number, since it is larger than the sum of its proper divisors (9293355).

11724345 is an equidigital number, since it uses as much as digits as its factorization.

11724345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28966 (or 28957 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 11724345 is about 3424.0830889451. The cubic root of 11724345 is about 227.1762169383.

The spelling of 11724345 in words is "eleven million, seven hundred twenty-four thousand, three hundred forty-five".