12471745 has 16 divisors (see below), whose sum is σ = 17583552. Its totient is φ = 8372160.

The previous prime is 12471707. The next prime is 12471751. The reversal of 12471745 is 54717421.

It is not a de Polignac number, because 12471745 - 2⁷ = 12471617 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 8007 + ... + 9436.

It is an arithmetic number, because the mean of its divisors is an integer number (1098972).

Almost surely, 2^12471745 is an apocalyptic number.

It is an amenable number.

12471745 is a deficient number, since it is larger than the sum of its proper divisors (5111807).

12471745 is a wasteful number, since it uses less digits than its factorization.

12471745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17472.

The product of its digits is 7840, while the sum is 31.

The square root of 12471745 is about 3531.5357848959. The cubic root of 12471745 is about 231.9044456373.

It can be divided in two parts, 1247 and 1745, that added together give a palindrome (2992).

The spelling of 12471745 in words is "twelve million, four hundred seventy-one thousand, seven hundred forty-five".