398272216 has 16 divisors (see below), whose sum is σ = 747012240. Its totient is φ = 199068960.

The previous prime is 398272213. The next prime is 398272247. The reversal of 398272216 is 612272893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398272213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24306 + ... + 37246.

It is an arithmetic number, because the mean of its divisors is an integer number (46688265).

Almost surely, 2^398272216 is an apocalyptic number.

It is an amenable number.

398272216 is a deficient number, since it is larger than the sum of its proper divisors (348740024).

398272216 is a wasteful number, since it uses less digits than its factorization.

398272216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16794 (or 16790 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 398272216 is about 19956.7586546513. The cubic root of 398272216 is about 735.7439001460.

The spelling of 398272216 in words is "three hundred ninety-eight million, two hundred seventy-two thousand, two hundred sixteen".