1317392 has 20 divisors (see below), whose sum is σ = 2575356. Its totient is φ = 652800.

The previous prime is 1317377. The next prime is 1317397. The reversal of 1317392 is 2937131.

It can be written as a sum of positive squares in 2 ways, for example, as 952576 + 364816 = 976^2 + 604^2 .

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1317397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1892 + ... + 2492.

2^1317392 is an apocalyptic number.

It is an amenable number.

1317392 is a deficient number, since it is larger than the sum of its proper divisors (1257964).

1317392 is a wasteful number, since it uses less digits than its factorization.

1317392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746 (or 740 counting only the distinct ones).

The product of its digits is 1134, while the sum is 26.

The square root of 1317392 is about 1147.7769818218. The cubic root of 1317392 is about 109.6238390966.

The spelling of 1317392 in words is "one million, three hundred seventeen thousand, three hundred ninety-two".