1297828 has 12 divisors (see below), whose sum is σ = 2595712. Its totient is φ = 556200.

The previous prime is 1297799. The next prime is 1297841. The reversal of 1297828 is 8287921.

1297828 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23148 + ... + 23203.

2^1297828 is an apocalyptic number.

It is an amenable number.

1297828 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.

1297828 is a wasteful number, since it uses less digits than its factorization.

1297828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46362 (or 46360 counting only the distinct ones).

The product of its digits is 16128, while the sum is 37.

The square root of 1297828 is about 1139.2225419118. Note that the first 3 decimals coincide. The cubic root of 1297828 is about 109.0784722354.

The spelling of 1297828 in words is "one million, two hundred ninety-seven thousand, eight hundred twenty-eight".