12642028 has 24 divisors (see below), whose sum is σ = 26157600. Its totient is φ = 5230848.

The previous prime is 12642001. The next prime is 12642031. The reversal of 12642028 is 82024621.

It is a happy number.

12642028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×12642028⁴ (a number of 30 digits) contains 4444 as substring.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 12641993 and 12642011.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6973 + ... + 8596.

It is an arithmetic number, because the mean of its divisors is an integer number (1089900).

Almost surely, 2^12642028 is an apocalyptic number.

It is an amenable number.

12642028 is an abundant number, since it is smaller than the sum of its proper divisors (13515572).

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

12642028 is a wasteful number, since it uses less digits than its factorization.

12642028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15609 (or 15607 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 12642028 is about 3555.5629652701. The cubic root of 12642028 is about 232.9551142453.

Adding to 12642028 its reverse (82024621), we get a palindrome (94666649).

The spelling of 12642028 in words is "twelve million, six hundred forty-two thousand, twenty-eight".