1317372 has 24 divisors (see below), whose sum is σ = 3513216. Its totient is φ = 376368.

The previous prime is 1317361. The next prime is 1317377. The reversal of 1317372 is 2737131.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317377) 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 7 ways as a sum of consecutive naturals, for example, 7758 + ... + 7925.

It is an arithmetic number, because the mean of its divisors is an integer number (146384).

2^1317372 is an apocalyptic number.

1317372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1317372 is an abundant number, since it is smaller than the sum of its proper divisors (2195844).

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

1317372 is a wasteful number, since it uses less digits than its factorization.

1317372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15697 (or 15695 counting only the distinct ones).

The product of its digits is 882, while the sum is 24.

The square root of 1317372 is about 1147.7682692948. The cubic root of 1317372 is about 109.6232843420.

It can be divided in two parts, 131 and 7372, that added together give a triangular number (7503 = T₁₂₂).

The spelling of 1317372 in words is "one million, three hundred seventeen thousand, three hundred seventy-two".