12782212 has 24 divisors (see below), whose sum is σ = 23777600. Its totient is φ = 5995296.

The previous prime is 12782183. The next prime is 12782213. The reversal of 12782212 is 21228721.

It is a super-2 number, since 2×12782212² = 326769887225888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12782213) 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, 7513 + ... + 9055.

Almost surely, 2^12782212 is an apocalyptic number.

It is an amenable number.

12782212 is a deficient number, since it is larger than the sum of its proper divisors (10995388).

12782212 is a wasteful number, since it uses less digits than its factorization.

12782212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1675 (or 1673 counting only the distinct ones).

The product of its digits is 896, while the sum is 25.

The square root of 12782212 is about 3575.2219511521. The cubic root of 12782212 is about 233.8130095991.

The spelling of 12782212 in words is "twelve million, seven hundred eighty-two thousand, two hundred twelve".