380401216 has 28 divisors (see below), whose sum is σ = 812926492. Its totient is φ = 175569408.

The previous prime is 380401211. The next prime is 380401247. The reversal of 380401216 is 612104083.

It can be written as a sum of positive squares in 2 ways, for example, as 23040000 + 357361216 = 4800^2 + 18904^2 .

It is not an unprimeable number, because it can be changed into a prime (380401211) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 227775 + ... + 229438.

It is an arithmetic number, because the mean of its divisors is an integer number (29033089).

Almost surely, 2^380401216 is an apocalyptic number.

It is an amenable number.

380401216 is an abundant number, since it is smaller than the sum of its proper divisors (432525276).

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

380401216 is a wasteful number, since it uses less digits than its factorization.

380401216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457238 (or 457228 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 380401216 is about 19503.8769479301. The cubic root of 380401216 is about 724.5704731233.

Adding to 380401216 its reverse (612104083), we get a palindrome (992505299).

The spelling of 380401216 in words is "three hundred eighty million, four hundred one thousand, two hundred sixteen".