198734328 has 96 divisors (see below), whose sum is σ = 588478800. Its totient is φ = 60217344.

The previous prime is 198734323. The next prime is 198734353. The reversal of 198734328 is 823437891.

It is a super-2 number, since 2×198734328² = 78990666251223168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198734323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61128 + ... + 64296.

Almost surely, 2^198734328 is an apocalyptic number.

198734328 is a gapful number since it is divisible by the number (18) 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 198734328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (294239400).

198734328 is an abundant number, since it is smaller than the sum of its proper divisors (389744472).

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

198734328 is a wasteful number, since it uses less digits than its factorization.

198734328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3261 (or 3254 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 198734328 is about 14097.3163403536. The cubic root of 198734328 is about 583.5673204070.

It can be divided in two parts, 1987 and 34328, that added together give a triangular number (36315 = T₂₆₉).

The spelling of 198734328 in words is "one hundred ninety-eight million, seven hundred thirty-four thousand, three hundred twenty-eight".