381502 has 8 divisors (see below), whose sum is σ = 624312. Its totient is φ = 173400.

The previous prime is 381487. The next prime is 381509. The reversal of 381502 is 205183.

It is a happy number.

381502 is nontrivially palindromic in base 15.

381502 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a pancake number, because a pancake can be divided into 381502 parts by 873 straight cuts.

It is a self number, because there is not a number n which added to its sum of digits gives 381502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381509) 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, 8649 + ... + 8692.

It is an arithmetic number, because the mean of its divisors is an integer number (78039).

2³⁸¹⁵⁰² is an apocalyptic number.

381502 is a deficient number, since it is larger than the sum of its proper divisors (242810).

381502 is a wasteful number, since it uses less digits than its factorization.

381502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17354.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 381502 is about 617.6584816871. The cubic root of 381502 is about 72.5268707372.

Adding to 381502 its reverse (205183), we get a palindrome (586685).

It can be divided in two parts, 38 and 1502, that added together give a triangular number (1540 = T₅₅).

The spelling of 381502 in words is "three hundred eighty-one thousand, five hundred two".