12272784 has 40 divisors (see below), whose sum is σ = 33375840. Its totient is φ = 3875328.

The previous prime is 12272783. The next prime is 12272801. The reversal of 12272784 is 48727221.

It is a super-2 number, since 2×12272784² = 301242454221312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12272783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5817 + ... + 7640.

It is an arithmetic number, because the mean of its divisors is an integer number (834396).

Almost surely, 2^12272784 is an apocalyptic number.

It is an amenable number.

12272784 is an abundant number, since it is smaller than the sum of its proper divisors (21103056).

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

12272784 is a wasteful number, since it uses less digits than its factorization.

12272784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13487 (or 13481 counting only the distinct ones).

The product of its digits is 12544, while the sum is 33.

The square root of 12272784 is about 3503.2533451065. The cubic root of 12272784 is about 230.6646433419.

The spelling of 12272784 in words is "twelve million, two hundred seventy-two thousand, seven hundred eighty-four".