198265860 has 192 divisors, whose sum is σ = 676623360. Its totient is φ = 47900160.

The previous prime is 198265843. The next prime is 198265861. The reversal of 198265860 is 68562891.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198265861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 427989 + ... + 428451.

It is an arithmetic number, because the mean of its divisors is an integer number (3524080).

Almost surely, 2^198265860 is an apocalyptic number.

198265860 is a gapful number since it is divisible by the number (10) 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 198265860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (338311680).

198265860 is an abundant number, since it is smaller than the sum of its proper divisors (478357500).

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

198265860 is a wasteful number, since it uses less digits than its factorization.

198265860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555 (or 547 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 198265860 is about 14080.6910341787. The cubic root of 198265860 is about 583.1084201405.

The spelling of 198265860 in words is "one hundred ninety-eight million, two hundred sixty-five thousand, eight hundred sixty".