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12466217 = 55722381

12466217 has 4 divisors (see below), whose sum is σ = 12489156. Its totient is φ = 12443280.

The previous prime is 12466211. The next prime is 12466241. The reversal of 12466217 is 71266421.

12466217 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71266421 = 103691907.

It can be written as a sum of positive squares in 2 ways, for example, as 3916441 + 8549776 = 1979^2 + 2924^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12466217 is a prime.

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 12466217.

It is not an unprimeable number, because it can be changed into a prime (12466211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10634 + ... + 11747.

It is an arithmetic number, because the mean of its divisors is an integer number (3122289).

Almost surely, 212466217 is an apocalyptic number.

It is an amenable number.

12466217 is a deficient number, since it is larger than the sum of its proper divisors (22939).

12466217 is an equidigital number, since it uses as much as digits as its factorization.

12466217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22938.

The product of its digits is 4032, while the sum is 29.

The square root of 12466217 is about 3530.7530358268. The cubic root of 12466217 is about 231.8701773178.

The spelling of 12466217 in words is "twelve million, four hundred sixty-six thousand, two hundred seventeen".

Divisors: 1 557 22381 12466217