198405852 has 24 divisors (see below), whose sum is σ = 467047056. Its totient is φ = 65549568.

The previous prime is 198405821. The next prime is 198405887. The reversal of 198405852 is 258504891.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71803 + ... + 74514.

It is an arithmetic number, because the mean of its divisors is an integer number (19460294).

Almost surely, 2^198405852 is an apocalyptic number.

198405852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

198405852 is an abundant number, since it is smaller than the sum of its proper divisors (268641204).

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

198405852 is a wasteful number, since it uses less digits than its factorization.

198405852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146437 (or 146435 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 42.

The square root of 198405852 is about 14085.6612198363. The cubic root of 198405852 is about 583.2456286827.

The spelling of 198405852 in words is "one hundred ninety-eight million, four hundred five thousand, eight hundred fifty-two".