381336 has 16 divisors (see below), whose sum is σ = 953400. Its totient is φ = 127104.

The previous prime is 381323. The next prime is 381343. The reversal of 381336 is 633183.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 15889 = 381336 / (3 + 8 + 1 + 3 + 3 + 6).

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

It is a congruent number.

It is an unprimeable number.

381336 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7921 + ... + 7968.

2³⁸¹³³⁶ is an apocalyptic number.

It is an amenable number.

381336 is an abundant number, since it is smaller than the sum of its proper divisors (572064).

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

381336 is a wasteful number, since it uses less digits than its factorization.

381336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15898 (or 15894 counting only the distinct ones).

The product of its digits is 1296, while the sum is 24.

The square root of 381336 is about 617.5240885990. The cubic root of 381336 is about 72.5163498599.

It can be divided in two parts, 381 and 336, that added together give a palindrome (717).

The spelling of 381336 in words is "three hundred eighty-one thousand, three hundred thirty-six".