12812428 has 6 divisors (see below), whose sum is σ = 22421756. Its totient is φ = 6406212.

The previous prime is 12812419. The next prime is 12812473. The reversal of 12812428 is 82421821.

It is a super-2 number, since 2×12812428² = 328316622510368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12812396 and 12812405.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1601550 + ... + 1601557.

Almost surely, 2^12812428 is an apocalyptic number.

It is an amenable number.

12812428 is a deficient number, since it is larger than the sum of its proper divisors (9609328).

12812428 is a wasteful number, since it uses less digits than its factorization.

12812428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3203111 (or 3203109 counting only the distinct ones).

The product of its digits is 2048, while the sum is 28.

The square root of 12812428 is about 3579.4452084087. The cubic root of 12812428 is about 233.9971022604.

The spelling of 12812428 in words is "twelve million, eight hundred twelve thousand, four hundred twenty-eight".