12240747 has 16 divisors (see below), whose sum is σ = 18626080. Its totient is φ = 7939296.

The previous prime is 12240719. The next prime is 12240749. The reversal of 12240747 is 74704221.

It is a happy number.

It is not a de Polignac number, because 12240747 - 2²³ = 3852139 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12240747.

It is not an unprimeable number, because it can be changed into a prime (12240749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5128 + ... + 7125.

It is an arithmetic number, because the mean of its divisors is an integer number (1164130).

Almost surely, 2^12240747 is an apocalyptic number.

12240747 is a deficient number, since it is larger than the sum of its proper divisors (6385333).

12240747 is a wasteful number, since it uses less digits than its factorization.

12240747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12299 (or 12293 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 12240747 is about 3498.6778931476. The cubic root of 12240747 is about 230.4637586673.

Adding to 12240747 its reverse (74704221), we get a palindrome (86944968).

The spelling of 12240747 in words is "twelve million, two hundred forty thousand, seven hundred forty-seven".