198227904 has 112 divisors (see below), whose sum is σ = 606966528. Its totient is φ = 55922688.

The previous prime is 198227891. The next prime is 198227917. The reversal of 198227904 is 409722891.

198227904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (198227891) and next prime (198227917).

It is a tau number, because it is divible by the number of its divisors (112).

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110664 + ... + 112440.

It is an arithmetic number, because the mean of its divisors is an integer number (5419344).

Almost surely, 2^198227904 is an apocalyptic number.

198227904 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 198227904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303483264).

198227904 is an abundant number, since it is smaller than the sum of its proper divisors (408738624).

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

198227904 is a wasteful number, since it uses less digits than its factorization.

198227904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882 (or 1872 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 198227904 is about 14079.3431664975. The cubic root of 198227904 is about 583.0712076896.

The spelling of 198227904 in words is "one hundred ninety-eight million, two hundred twenty-seven thousand, nine hundred four".