198645272 has 128 divisors (see below), whose sum is σ = 477757440. Its totient is φ = 75479040.

The previous prime is 198645269. The next prime is 198645277. The reversal of 198645272 is 272546891.

It is a happy number.

198645272 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198645277) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1564073 + ... + 1564199.

It is an arithmetic number, because the mean of its divisors is an integer number (3732480).

Almost surely, 2^198645272 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 198645272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238878720).

198645272 is an abundant number, since it is smaller than the sum of its proper divisors (279112168).

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

198645272 is a wasteful number, since it uses less digits than its factorization.

198645272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 237 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 198645272 is about 14094.1573710527. The cubic root of 198645272 is about 583.4801387969.

The spelling of 198645272 in words is "one hundred ninety-eight million, six hundred forty-five thousand, two hundred seventy-two".