1321386 has 16 divisors (see below), whose sum is σ = 2883168. Its totient is φ = 400400.

The previous prime is 1321379. The next prime is 1321391. The reversal of 1321386 is 6831231.

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, 9945 + ... + 10076.

It is an arithmetic number, because the mean of its divisors is an integer number (180198).

2^1321386 is an apocalyptic number.

1321386 is an abundant number, since it is smaller than the sum of its proper divisors (1561782).

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

1321386 is a wasteful number, since it uses less digits than its factorization.

1321386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20037.

The product of its digits is 864, while the sum is 24.

The square root of 1321386 is about 1149.5155501341. The cubic root of 1321386 is about 109.7345112646.

The spelling of 1321386 in words is "one million, three hundred twenty-one thousand, three hundred eighty-six".