381712 has 10 divisors (see below), whose sum is σ = 739598. Its totient is φ = 190848.

The previous prime is 381707. The next prime is 381713. The reversal of 381712 is 217183.

It can be written as a sum of positive squares in only one way, i.e., 234256 + 147456 = 484^2 + 384^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 381712.

It is not an unprimeable number, because it can be changed into a prime (381713) by changing a digit.

381712 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 as a sum of consecutive naturals, namely, 11913 + ... + 11944.

2³⁸¹⁷¹² is an apocalyptic number.

It is an amenable number.

381712 is a deficient number, since it is larger than the sum of its proper divisors (357886).

381712 is a wasteful number, since it uses less digits than its factorization.

381712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23865 (or 23859 counting only the distinct ones).

The product of its digits is 336, while the sum is 22.

The square root of 381712 is about 617.8284551556. The cubic root of 381712 is about 72.5401759092.

Adding to 381712 its reverse (217183), we get a palindrome (598895).

It can be divided in two parts, 38 and 1712, that multiplied together give a palindrome (65056).

The spelling of 381712 in words is "three hundred eighty-one thousand, seven hundred twelve".