398202312 has 32 divisors (see below), whose sum is σ = 1038790080. Its totient is φ = 126962880.

The previous prime is 398202281. The next prime is 398202313. The reversal of 398202312 is 213202893.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 398202312.

It is not an unprimeable number, because it can be changed into a prime (398202313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360139 + ... + 361242.

It is an arithmetic number, because the mean of its divisors is an integer number (32462190).

Almost surely, 2^398202312 is an apocalyptic number.

It is an amenable number.

398202312 is an abundant number, since it is smaller than the sum of its proper divisors (640587768).

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

398202312 is a wasteful number, since it uses less digits than its factorization.

398202312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721413 (or 721409 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 398202312 is about 19955.0071911789. The cubic root of 398202312 is about 735.7008521595.

The spelling of 398202312 in words is "three hundred ninety-eight million, two hundred two thousand, three hundred twelve".