381450 has 24 divisors (see below), whose sum is σ = 946368. Its totient is φ = 101680.

The previous prime is 381443. The next prime is 381461. The reversal of 381450 is 54183.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

381450 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 11 ways as a sum of consecutive naturals, for example, 1122 + ... + 1421.

It is an arithmetic number, because the mean of its divisors is an integer number (39432).

2³⁸¹⁴⁵⁰ is an apocalyptic number.

381450 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

381450 is an abundant number, since it is smaller than the sum of its proper divisors (564918).

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

381450 is a wasteful number, since it uses less digits than its factorization.

381450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2558 (or 2553 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 381450 is about 617.6163857930. The cubic root of 381450 is about 72.5235753691.

The spelling of 381450 in words is "three hundred eighty-one thousand, four hundred fifty".