1313828 has 18 divisors (see below), whose sum is σ = 2452086. Its totient is φ = 613824.

The previous prime is 1313827. The next prime is 1313839. The reversal of 1313828 is 8283131.

It can be written as a sum of positive squares in only one way, i.e., 1236544 + 77284 = 1112^2 + 278^2 .

It is a super-2 number, since 2×1313828² = 3452288027168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1313797 and 1313806.

It is not an unprimeable number, because it can be changed into a prime (1313827) 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, 9383 + ... + 9521.

It is an arithmetic number, because the mean of its divisors is an integer number (136227).

2^1313828 is an apocalyptic number.

It is an amenable number.

1313828 is a deficient number, since it is larger than the sum of its proper divisors (1138258).

1313828 is a wasteful number, since it uses less digits than its factorization.

1313828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299 (or 158 counting only the distinct ones).

The product of its digits is 1152, while the sum is 26.

The square root of 1313828 is about 1146.2233639217. The cubic root of 1313828 is about 109.5248930430.

Adding to 1313828 its reverse (8283131), we get a palindrome (9596959).

The spelling of 1313828 in words is "one million, three hundred thirteen thousand, eight hundred twenty-eight".