1304386 has 8 divisors (see below), whose sum is σ = 1962000.
Its totient is φ = 650388.
The previous prime is 1304371. The next prime is 1304389. The reversal of 1304386 is 6834031.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a self number, because there is not a number n which added to its sum of digits gives 1304386.
It is not an unprimeable number, because it can be changed into a prime (1304389) by changing a digit.
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, 345 + ... + 1651.
It is an arithmetic number, because the mean of its divisors is an integer number (245250).
21304386 is an apocalyptic number.
1304386 is a deficient number, since it is larger than the sum of its proper divisors (657614).
1304386 is a wasteful number, since it uses less digits than its factorization.
1304386 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1808.
The product of its (nonzero) digits is 1728, while the sum is 25.
The square root of 1304386 is about 1142.0971937624.
The cubic root of 1304386 is about 109.2618902520.
The spelling of 1304386 in words is "one million, three hundred four thousand, three hundred eighty-six".