1321028 has 24 divisors (see below), whose sum is σ = 2455488. Its totient is φ = 620576.

The previous prime is 1321007. The next prime is 1321031. The reversal of 1321028 is 8201231.

It is a super-2 number, since 2×1321028² = 3490229953568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1320997 and 1321015.

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, 7550 + ... + 7722.

It is an arithmetic number, because the mean of its divisors is an integer number (102312).

2^1321028 is an apocalyptic number.

It is an amenable number.

1321028 is a deficient number, since it is larger than the sum of its proper divisors (1134460).

1321028 is a wasteful number, since it uses less digits than its factorization.

1321028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1321028 is about 1149.3598218139. The cubic root of 1321028 is about 109.7246003318.

Adding to 1321028 its reverse (8201231), we get a palindrome (9522259).

The spelling of 1321028 in words is "one million, three hundred twenty-one thousand, twenty-eight".