1304864 has 36 divisors (see below), whose sum is σ = 2832102. Its totient is φ = 591360.

The previous prime is 1304857. The next prime is 1304867. The reversal of 1304864 is 4684031.

It can be written as a sum of positive squares in only one way, i.e., 1210000 + 94864 = 1100^2 + 308^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304867) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3704 + ... + 4040.

2^1304864 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 1304864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1416051).

1304864 is an abundant number, since it is smaller than the sum of its proper divisors (1527238).

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

1304864 is a wasteful number, since it uses less digits than its factorization.

1304864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369 (or 350 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1304864 is about 1142.3064387458. The cubic root of 1304864 is about 109.2752351783.

Adding to 1304864 its reverse (4684031), we get a palindrome (5988895).

It can be divided in two parts, 130 and 4864, that added together give a palindrome (4994).

The spelling of 1304864 in words is "one million, three hundred four thousand, eight hundred sixty-four".