12272520 has 64 divisors (see below), whose sum is σ = 39654720. Its totient is φ = 3020544.

The previous prime is 12272483. The next prime is 12272549. The reversal of 12272520 is 2527221.

It is a happy number.

It is a super-2 number, since 2×12272520² = 301229494300800, which contains 22 as substring.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 2374 + ... + 5493.

It is an arithmetic number, because the mean of its divisors is an integer number (619605).

Almost surely, 2^12272520 is an apocalyptic number.

12272520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12272520 is an abundant number, since it is smaller than the sum of its proper divisors (27382200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12272520 is a wasteful number, since it uses less digits than its factorization.

12272520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7894 (or 7890 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 12272520 is about 3503.2156656421. The cubic root of 12272520 is about 230.6629893868.

Adding to 12272520 its reverse (2527221), we get a palindrome (14799741).

The spelling of 12272520 in words is "twelve million, two hundred seventy-two thousand, five hundred twenty".