1381726 has 8 divisors (see below), whose sum is σ = 2194560. Its totient is φ = 650208.

The previous prime is 1381697. The next prime is 1381727. The reversal of 1381726 is 6271831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1381694 and 1381703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381727) 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, 20286 + ... + 20353.

It is an arithmetic number, because the mean of its divisors is an integer number (274320).

2^1381726 is an apocalyptic number.

1381726 is a deficient number, since it is larger than the sum of its proper divisors (812834).

1381726 is a wasteful number, since it uses less digits than its factorization.

1381726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40658.

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

The square root of 1381726 is about 1175.4684172703. The cubic root of 1381726 is about 111.3800247183.

The spelling of 1381726 in words is "one million, three hundred eighty-one thousand, seven hundred twenty-six".