381546 has 48 divisors (see below), whose sum is σ = 943488. Its totient is φ = 110400.

The previous prime is 381541. The next prime is 381559. The reversal of 381546 is 645183.

It is a super-3 number, since 3×381546³ = 166633366882078008, which contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (381541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8095 + ... + 8141.

It is an arithmetic number, because the mean of its divisors is an integer number (19656).

2³⁸¹⁵⁴⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (471744).

381546 is an abundant number, since it is smaller than the sum of its proper divisors (561942).

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

381546 is a wasteful number, since it uses less digits than its factorization.

381546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107 (or 104 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 381546 is about 617.6940990490. The cubic root of 381546 is about 72.5296588918.

The spelling of 381546 in words is "three hundred eighty-one thousand, five hundred forty-six".