12209715 has 48 divisors (see below), whose sum is σ = 24530688. Its totient is φ = 5502528.

The previous prime is 12209683. The next prime is 12209737. The reversal of 12209715 is 51790221.

It is not a de Polignac number, because 12209715 - 2⁵ = 12209683 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 25912 + ... + 26378.

It is an arithmetic number, because the mean of its divisors is an integer number (511056).

Almost surely, 2^12209715 is an apocalyptic number.

12209715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12209715 is an abundant number, since it is smaller than the sum of its proper divisors (12320973).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12209715 is a wasteful number, since it uses less digits than its factorization.

12209715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568 (or 565 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 12209715 is about 3494.2402607720. The cubic root of 12209715 is about 230.2688412753.

Adding to 12209715 its reverse (51790221), we get a palindrome (63999936).

The spelling of 12209715 in words is "twelve million, two hundred nine thousand, seven hundred fifteen".