198999504 has 240 divisors, whose sum is σ = 649125120. Its totient is φ = 59019840.

The previous prime is 198999413. The next prime is 198999539. The reversal of 198999504 is 405999891.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4234009 + ... + 4234055.

It is an arithmetic number, because the mean of its divisors is an integer number (2704688).

Almost surely, 2^198999504 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 198999504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (324562560).

198999504 is an abundant number, since it is smaller than the sum of its proper divisors (450125616).

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

198999504 is an equidigital number, since it uses as much as digits as its factorization.

198999504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98 (or 63 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 54.

The square root of 198999504 is about 14106.7183994010. The cubic root of 198999504 is about 583.8267610252.

It can be divided in two parts, 19899 and 9504, that added together give a triangular number (29403 = T₂₄₂).

The spelling of 198999504 in words is "one hundred ninety-eight million, nine hundred ninety-nine thousand, five hundred four".