1312628 has 12 divisors (see below), whose sum is σ = 2308740. Its totient is φ = 652992.

The previous prime is 1312603. The next prime is 1312637. The reversal of 1312628 is 8262131.

It can be written as a sum of positive squares in 2 ways, for example, as 1162084 + 150544 = 1078^2 + 388^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200 + ... + 1632.

It is an arithmetic number, because the mean of its divisors is an integer number (192395).

2^1312628 is an apocalyptic number.

It is an amenable number.

1312628 is a deficient number, since it is larger than the sum of its proper divisors (996112).

1312628 is a wasteful number, since it uses less digits than its factorization.

1312628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666 (or 1664 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

The square root of 1312628 is about 1145.6997861569. The cubic root of 1312628 is about 109.4915376098.

Adding to 1312628 its reverse (8262131), we get a palindrome (9574759).

The spelling of 1312628 in words is "one million, three hundred twelve thousand, six hundred twenty-eight".