198712320 has 176 divisors, whose sum is σ = 673839648. Its totient is φ = 49807360.

The previous prime is 198712313. The next prime is 198712333. The reversal of 198712320 is 23217891.

It is a super-2 number, since 2×198712320² = 78973172239564800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260740 + ... + 261500.

Almost surely, 2^198712320 is an apocalyptic number.

198712320 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 198712320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336919824).

198712320 is an abundant number, since it is smaller than the sum of its proper divisors (475127328).

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

198712320 is a wasteful number, since it uses less digits than its factorization.

198712320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806 (or 788 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 198712320 is about 14096.5357446431. The cubic root of 198712320 is about 583.5457780397.

The spelling of 198712320 in words is "one hundred ninety-eight million, seven hundred twelve thousand, three hundred twenty".