1296428 has 12 divisors (see below), whose sum is σ = 2592912. Its totient is φ = 555600.

The previous prime is 1296419. The next prime is 1296467. The reversal of 1296428 is 8246921.

1296428 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1296394 and 1296403.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23123 + ... + 23178.

It is an arithmetic number, because the mean of its divisors is an integer number (216076).

2^1296428 is an apocalyptic number.

It is an amenable number.

1296428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1296428 is a wasteful number, since it uses less digits than its factorization.

1296428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46312 (or 46310 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 1296428 is about 1138.6079219819. The cubic root of 1296428 is about 109.0392362183.

The spelling of 1296428 in words is "one million, two hundred ninety-six thousand, four hundred twenty-eight".