12272408 has 8 divisors (see below), whose sum is σ = 23010780. Its totient is φ = 6136200.

The previous prime is 12272401. The next prime is 12272431. The reversal of 12272408 is 80427221.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×12272408² = 301223996236928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12272401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 767018 + ... + 767033.

Almost surely, 2^12272408 is an apocalyptic number.

It is an amenable number.

12272408 is a deficient number, since it is larger than the sum of its proper divisors (10738372).

12272408 is a wasteful number, since it uses less digits than its factorization.

12272408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534057 (or 1534053 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 12272408 is about 3503.1996802923. The cubic root of 12272408 is about 230.6622877017.

Adding to 12272408 its reverse (80427221), we get a palindrome (92699629).

The spelling of 12272408 in words is "twelve million, two hundred seventy-two thousand, four hundred eight".