198546432 has 132 divisors (see below), whose sum is σ = 616065120. Its totient is φ = 56684544.

The previous prime is 198546401. The next prime is 198546433. The reversal of 198546432 is 234645891.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198546433) 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 11 ways as a sum of consecutive naturals, for example, 149869 + ... + 151187.

It is an arithmetic number, because the mean of its divisors is an integer number (4667160).

Almost surely, 2^198546432 is an apocalyptic number.

198546432 is a gapful number since it is divisible by the number (12) 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 198546432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308032560).

198546432 is an abundant number, since it is smaller than the sum of its proper divisors (417518688).

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

198546432 is a wasteful number, since it uses less digits than its factorization.

198546432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356 (or 1331 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 198546432 is about 14090.6505172756. The cubic root of 198546432 is about 583.3833486004.

The spelling of 198546432 in words is "one hundred ninety-eight million, five hundred forty-six thousand, four hundred thirty-two".