198394224 has 80 divisors (see below), whose sum is σ = 587676672. Its totient is φ = 56496384.

The previous prime is 198394177. The next prime is 198394241. The reversal of 198394224 is 422493891.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 124537 + ... + 126119.

Almost surely, 2^198394224 is an apocalyptic number.

198394224 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198394224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293838336).

198394224 is an abundant number, since it is smaller than the sum of its proper divisors (389282448).

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

198394224 is a wasteful number, since it uses less digits than its factorization.

198394224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1974 (or 1968 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 198394224 is about 14085.2484536127. The cubic root of 198394224 is about 583.2342343402.

The spelling of 198394224 in words is "one hundred ninety-eight million, three hundred ninety-four thousand, two hundred twenty-four".