1387726 has 8 divisors (see below), whose sum is σ = 2086704. Its totient is φ = 692160.

The previous prime is 1387721. The next prime is 1387733. The reversal of 1387726 is 6277831.

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 = 1387691 and 1387700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387721) 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, 831 + ... + 1861.

It is an arithmetic number, because the mean of its divisors is an integer number (260838).

2^1387726 is an apocalyptic number.

1387726 is a deficient number, since it is larger than the sum of its proper divisors (698978).

1387726 is a wasteful number, since it uses less digits than its factorization.

1387726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706.

The product of its digits is 14112, while the sum is 34.

The square root of 1387726 is about 1178.0178266902. The cubic root of 1387726 is about 111.5410106067.

The spelling of 1387726 in words is "one million, three hundred eighty-seven thousand, seven hundred twenty-six".