198578996 has 48 divisors (see below), whose sum is σ = 434555520. Its totient is φ = 77137920.

The previous prime is 198578993. The next prime is 198579001. The reversal of 198578996 is 699875891.

198578996 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Its product of digits (9797760) is a multiple of the sum of its prime factors (1944).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198578993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132620 + ... + 134108.

It is an arithmetic number, because the mean of its divisors is an integer number (9053240).

Almost surely, 2^198578996 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 198578996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217277760).

198578996 is an abundant number, since it is smaller than the sum of its proper divisors (235976524).

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

198578996 is a wasteful number, since it uses less digits than its factorization.

198578996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1944 (or 1942 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 62.

The square root of 198578996 is about 14091.8059878782. The cubic root of 198578996 is about 583.4152408161.

The spelling of 198578996 in words is "one hundred ninety-eight million, five hundred seventy-eight thousand, nine hundred ninety-six".