381730212 has 48 divisors (see below), whose sum is σ = 1002220800. Its totient is φ = 125629920.

The previous prime is 381730183. The next prime is 381730229. The reversal of 381730212 is 212037183.

381730212 is a `hidden beast` number, since 381 + 73 + 0 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13839 + ... + 30902.

It is an arithmetic number, because the mean of its divisors is an integer number (20879600).

Almost surely, 2^381730212 is an apocalyptic number.

It is an amenable number.

381730212 is an abundant number, since it is smaller than the sum of its proper divisors (620490588).

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

381730212 is a wasteful number, since it uses less digits than its factorization.

381730212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44833 (or 44825 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 381730212 is about 19537.9172892097. The cubic root of 381730212 is about 725.4132955438.

Adding to 381730212 its reverse (212037183), we get a palindrome (593767395).

The spelling of 381730212 in words is "three hundred eighty-one million, seven hundred thirty thousand, two hundred twelve".