1304990 has 16 divisors (see below), whose sum is σ = 2413152. Its totient is φ = 507744.

The previous prime is 1304987. The next prime is 1305011. The reversal of 1304990 is 994031.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1394 + ... + 2133.

It is an arithmetic number, because the mean of its divisors is an integer number (150822).

2^1304990 is an apocalyptic number.

1304990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1304990 is a deficient number, since it is larger than the sum of its proper divisors (1108162).

1304990 is a wasteful number, since it uses less digits than its factorization.

1304990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3571.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 1304990 is about 1142.3615889901. The cubic root of 1304990 is about 109.2787523358.

The spelling of 1304990 in words is "one million, three hundred four thousand, nine hundred ninety".