12270465 has 24 divisors (see below), whose sum is σ = 21371688. Its totient is φ = 6512640.

The previous prime is 12270443. The next prime is 12270473. The reversal of 12270465 is 56407221.

It can be written as a sum of positive squares in 4 ways, for example, as 5489649 + 6780816 = 2343^2 + 2604^2 .

It is not a de Polignac number, because 12270465 - 2¹⁰ = 12269441 is a prime.

It is a super-2 number, since 2×12270465² = 301128622632450, which contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 11035 + ... + 12095.

It is an arithmetic number, because the mean of its divisors is an integer number (890487).

Almost surely, 2^12270465 is an apocalyptic number.

12270465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12270465 is a deficient number, since it is larger than the sum of its proper divisors (9101223).

12270465 is a wasteful number, since it uses less digits than its factorization.

12270465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329 (or 1326 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 12270465 is about 3502.9223514089. The cubic root of 12270465 is about 230.6501140386.

Adding to 12270465 its reverse (56407221), we get a palindrome (68677686).

The spelling of 12270465 in words is "twelve million, two hundred seventy thousand, four hundred sixty-five".