387782216 has 32 divisors (see below), whose sum is σ = 734516640. Its totient is φ = 191922048.

The previous prime is 387782209. The next prime is 387782249. The reversal of 387782216 is 612287783.

It is a happy number.

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, 452060 + ... + 452916.

It is an arithmetic number, because the mean of its divisors is an integer number (22953645).

Almost surely, 2^387782216 is an apocalyptic number.

It is an amenable number.

387782216 is a deficient number, since it is larger than the sum of its proper divisors (346734424).

387782216 is a wasteful number, since it uses less digits than its factorization.

387782216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373 (or 1369 counting only the distinct ones).

The product of its digits is 225792, while the sum is 44.

The square root of 387782216 is about 19692.1866739070. The cubic root of 387782216 is about 729.2268138133.

The spelling of 387782216 in words is "three hundred eighty-seven million, seven hundred eighty-two thousand, two hundred sixteen".