12272345 has 8 divisors (see below), whose sum is σ = 15125064. Its totient is φ = 9552384.

The previous prime is 12272341. The next prime is 12272357. The reversal of 12272345 is 54327221.

It can be written as a sum of positive squares in 4 ways, for example, as 3463321 + 8809024 = 1861^2 + 2968^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12272345 - 2² = 12272341 is a prime.

It is a super-2 number, since 2×12272345² = 301220903598050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12272341) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 32984 + ... + 33353.

It is an arithmetic number, because the mean of its divisors is an integer number (1890633).

Almost surely, 2^12272345 is an apocalyptic number.

It is an amenable number.

12272345 is a deficient number, since it is larger than the sum of its proper divisors (2852719).

12272345 is an equidigital number, since it uses as much as digits as its factorization.

12272345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66379.

The product of its digits is 3360, while the sum is 26.

The square root of 12272345 is about 3503.1906885010. The cubic root of 12272345 is about 230.6618930019.

Adding to 12272345 its reverse (54327221), we get a palindrome (66599566).

The spelling of 12272345 in words is "twelve million, two hundred seventy-two thousand, three hundred forty-five".