12247215 has 16 divisors (see below), whose sum is σ = 19788288. Its totient is φ = 6467616.

The previous prime is 12247211. The next prime is 12247237. The reversal of 12247215 is 51274221.

It is not a de Polignac number, because 12247215 - 2² = 12247211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12247211) 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, 2419 + ... + 5508.

It is an arithmetic number, because the mean of its divisors is an integer number (1236768).

Almost surely, 2^12247215 is an apocalyptic number.

12247215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12247215 is a deficient number, since it is larger than the sum of its proper divisors (7541073).

12247215 is a wasteful number, since it uses less digits than its factorization.

12247215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8038.

The product of its digits is 1120, while the sum is 24.

The square root of 12247215 is about 3499.6021202417. The cubic root of 12247215 is about 230.5043438026.

The spelling of 12247215 in words is "twelve million, two hundred forty-seven thousand, two hundred fifteen".