12272775 has 12 divisors (see below), whose sum is σ = 20291112. Its totient is φ = 6545440.

The previous prime is 12272749. The next prime is 12272779. The reversal of 12272775 is 57727221.

12272775 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12272775 - 2⁹ = 12272263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12272779) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81744 + ... + 81893.

It is an arithmetic number, because the mean of its divisors is an integer number (1690926).

Almost surely, 2^12272775 is an apocalyptic number.

12272775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12272775 is a deficient number, since it is larger than the sum of its proper divisors (8018337).

12272775 is a wasteful number, since it uses less digits than its factorization.

12272775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163650 (or 163645 counting only the distinct ones).

The product of its digits is 13720, while the sum is 33.

The square root of 12272775 is about 3503.2520605860. The cubic root of 12272775 is about 230.6645869575.

Adding to 12272775 its reverse (57727221), we get a palindrome (69999996).

The spelling of 12272775 in words is "twelve million, two hundred seventy-two thousand, seven hundred seventy-five".