381726 has 16 divisors (see below), whose sum is σ = 848400. Its totient is φ = 127224.

The previous prime is 381713. The next prime is 381737. The reversal of 381726 is 627183.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 381726.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 381726.

It is an unprimeable number.

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, 3481 + ... + 3588.

It is an arithmetic number, because the mean of its divisors is an integer number (53025).

2³⁸¹⁷²⁶ is an apocalyptic number.

381726 is an abundant number, since it is smaller than the sum of its proper divisors (466674).

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

381726 is a wasteful number, since it uses less digits than its factorization.

381726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7080 (or 7074 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 381726 is about 617.8397850576. The cubic root of 381726 is about 72.5410627471.

It can be divided in two parts, 38 and 1726, that added together give a square (1764 = 42²).

The spelling of 381726 in words is "three hundred eighty-one thousand, seven hundred twenty-six".