1317628 has 12 divisors (see below), whose sum is σ = 2483320. Its totient is φ = 608112.

The previous prime is 1317599. The next prime is 1317629. The reversal of 1317628 is 8267131.

It is a super-2 number, since 2×1317628² = 3472287092768, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1317596 and 1317605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317629) 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 3 ways as a sum of consecutive naturals, for example, 12618 + ... + 12721.

2^1317628 is an apocalyptic number.

It is an amenable number.

1317628 is a deficient number, since it is larger than the sum of its proper divisors (1165692).

1317628 is a wasteful number, since it uses less digits than its factorization.

1317628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25356 (or 25354 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 1317628 is about 1147.8797846465. The cubic root of 1317628 is about 109.6303847771.

The spelling of 1317628 in words is "one million, three hundred seventeen thousand, six hundred twenty-eight".