1321828 has 24 divisors (see below), whose sum is σ = 2419200. Its totient is φ = 631488.

The previous prime is 1321823. The next prime is 1321841. The reversal of 1321828 is 8281231.

It is not an unprimeable number, because it can be changed into a prime (1321823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14808 + ... + 14896.

It is an arithmetic number, because the mean of its divisors is an integer number (100800).

2^1321828 is an apocalyptic number.

It is an amenable number.

1321828 is a deficient number, since it is larger than the sum of its proper divisors (1097372).

1321828 is a wasteful number, since it uses less digits than its factorization.

1321828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219 (or 217 counting only the distinct ones).

The product of its digits is 768, while the sum is 25.

The square root of 1321828 is about 1149.7077889620. The cubic root of 1321828 is about 109.7467451985.

The spelling of 1321828 in words is "one million, three hundred twenty-one thousand, eight hundred twenty-eight".