1304604 has 72 divisors (see below), whose sum is σ = 3913728. Its totient is φ = 358560.

The previous prime is 1304603. The next prime is 1304609. The reversal of 1304604 is 4064031.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7729 + ... + 7895.

2^1304604 is an apocalyptic number.

1304604 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1304604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1956864).

1304604 is an abundant number, since it is smaller than the sum of its proper divisors (2609124).

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

1304604 is a wasteful number, since it uses less digits than its factorization.

1304604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1304604 is about 1142.1926282375. The cubic root of 1304604 is about 109.2679768361.

Adding to 1304604 its reverse (4064031), we get a palindrome (5368635).

The spelling of 1304604 in words is "one million, three hundred four thousand, six hundred four".