1304512 has 56 divisors (see below), whose sum is σ = 3017520. Its totient is φ = 552960.

The previous prime is 1304503. The next prime is 1304519. The reversal of 1304512 is 2154031.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304519) 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 7 ways as a sum of consecutive naturals, for example, 11914 + ... + 12022.

2^1304512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1304512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1508760).

1304512 is an abundant number, since it is smaller than the sum of its proper divisors (1713008).

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

1304512 is a wasteful number, since it uses less digits than its factorization.

1304512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1304512 is about 1142.1523541104. The cubic root of 1304512 is about 109.2654082686.

Adding to 1304512 its reverse (2154031), we get a palindrome (3458543).

The spelling of 1304512 in words is "one million, three hundred four thousand, five hundred twelve".