381162216 has 32 divisors (see below), whose sum is σ = 957434400. Its totient is φ = 126450240.

The previous prime is 381162193. The next prime is 381162227. The reversal of 381162216 is 612261183.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32571 + ... + 42698.

It is an arithmetic number, because the mean of its divisors is an integer number (29919825).

Almost surely, 2^381162216 is an apocalyptic number.

It is an amenable number.

381162216 is an abundant number, since it is smaller than the sum of its proper divisors (576272184).

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

381162216 is a wasteful number, since it uses less digits than its factorization.

381162216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75489 (or 75485 counting only the distinct ones).

The product of its digits is 3456, while the sum is 30.

The square root of 381162216 is about 19523.3761424606. The cubic root of 381162216 is about 725.0533237038.

The spelling of 381162216 in words is "three hundred eighty-one million, one hundred sixty-two thousand, two hundred sixteen".