398818224 has 120 divisors (see below), whose sum is σ = 1316836352. Its totient is φ = 110263680.

The previous prime is 398818223. The next prime is 398818253. The reversal of 398818224 is 422818893.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 398818224.

It is not an unprimeable number, because it can be changed into a prime (398818223) 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 23 ways as a sum of consecutive naturals, for example, 24867 + ... + 37629.

Almost surely, 2^398818224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 398818224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (658418176).

398818224 is an abundant number, since it is smaller than the sum of its proper divisors (918018128).

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

398818224 is a wasteful number, since it uses less digits than its factorization.

398818224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12815 (or 12806 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 398818224 is about 19970.4337459155. The cubic root of 398818224 is about 736.0799672878.

The spelling of 398818224 in words is "three hundred ninety-eight million, eight hundred eighteen thousand, two hundred twenty-four".