381730 has 16 divisors (see below), whose sum is σ = 699840. Its totient is φ = 149872.

The previous prime is 381713. The next prime is 381737. The reversal of 381730 is 37183.

It is not an unprimeable number, because it can be changed into a prime (381737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267 + ... + 913.

It is an arithmetic number, because the mean of its divisors is an integer number (43740).

2³⁸¹⁷³⁰ is an apocalyptic number.

381730 is a deficient number, since it is larger than the sum of its proper divisors (318110).

381730 is a wasteful number, since it uses less digits than its factorization.

381730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 381730 is about 617.8430221343. The cubic root of 381730 is about 72.5413161254.

It can be divided in two parts, 381 and 730, that added together give a palindrome (1111).

The spelling of 381730 in words is "three hundred eighty-one thousand, seven hundred thirty".