398297272 has 16 divisors (see below), whose sum is σ = 752182200. Its totient is φ = 197715360.

The previous prime is 398297257. The next prime is 398297287. The reversal of 398297272 is 272792893.

It is an interprime number because it is at equal distance from previous prime (398297257) and next prime (398297287).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177979 + ... + 180202.

Almost surely, 2^398297272 is an apocalyptic number.

It is an amenable number.

398297272 is a deficient number, since it is larger than the sum of its proper divisors (353884928).

398297272 is a wasteful number, since it uses less digits than its factorization.

398297272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358326 (or 358322 counting only the distinct ones).

The product of its digits is 762048, while the sum is 49.

The square root of 398297272 is about 19957.3864020317. The cubic root of 398297272 is about 735.7593287999.

The spelling of 398297272 in words is "three hundred ninety-eight million, two hundred ninety-seven thousand, two hundred seventy-two".