12292728 has 48 divisors (see below), whose sum is σ = 35752680. Its totient is φ = 3511872.

The previous prime is 12292699. The next prime is 12292729. The reversal of 12292728 is 82729221.

It is a super-2 number, since 2×12292728² = 302222323363968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12292729) 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 11 ways as a sum of consecutive naturals, for example, 4051 + ... + 6402.

Almost surely, 2^12292728 is an apocalyptic number.

It is an amenable number.

12292728 is an abundant number, since it is smaller than the sum of its proper divisors (23459952).

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

12292728 is a wasteful number, since it uses less digits than its factorization.

12292728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10476 (or 10465 counting only the distinct ones).

The product of its digits is 8064, while the sum is 33.

The square root of 12292728 is about 3506.0986865746. The cubic root of 12292728 is about 230.7895236172.

The spelling of 12292728 in words is "twelve million, two hundred ninety-two thousand, seven hundred twenty-eight".