381172 has 12 divisors (see below), whose sum is σ = 727776. Its totient is φ = 173240.

The previous prime is 381169. The next prime is 381181. The reversal of 381172 is 271183.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4288 + ... + 4375.

It is an arithmetic number, because the mean of its divisors is an integer number (60648).

2³⁸¹¹⁷² is an apocalyptic number.

It is an amenable number.

381172 is a deficient number, since it is larger than the sum of its proper divisors (346604).

381172 is a wasteful number, since it uses less digits than its factorization.

381172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8678 (or 8676 counting only the distinct ones).

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

The square root of 381172 is about 617.3912859767. The cubic root of 381172 is about 72.5059527415.

It can be divided in two parts, 3811 and 72, that added together give a palindrome (3883).

The spelling of 381172 in words is "three hundred eighty-one thousand, one hundred seventy-two".