1304289 has 32 divisors (see below), whose sum is σ = 2263040. Its totient is φ = 727056.

The previous prime is 1304273. The next prime is 1304299. The reversal of 1304289 is 9824031.

It is not a de Polignac number, because 1304289 - 2⁴ = 1304273 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (1304209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12612 + ... + 12714.

It is an arithmetic number, because the mean of its divisors is an integer number (70720).

2^1304289 is an apocalyptic number.

It is an amenable number.

1304289 is a deficient number, since it is larger than the sum of its proper divisors (958751).

1304289 is a wasteful number, since it uses less digits than its factorization.

1304289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1304289 is about 1142.0547272351. The cubic root of 1304289 is about 109.2591817832.

It can be divided in two parts, 13042 and 89, that added together give a palindrome (13131).

The spelling of 1304289 in words is "one million, three hundred four thousand, two hundred eighty-nine".