198477888 has 112 divisors (see below), whose sum is σ = 610575360. Its totient is φ = 55724544.

The previous prime is 198477871. The next prime is 198477889. The reversal of 198477888 is 888774891.

It is a tau number, because it is divible by the number of its divisors (112).

It is not an unprimeable number, because it can be changed into a prime (198477889) 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, 78045 + ... + 80547.

Almost surely, 2^198477888 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 198477888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305287680).

198477888 is an abundant number, since it is smaller than the sum of its proper divisors (412097472).

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

198477888 is a wasteful number, since it uses less digits than its factorization.

198477888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2584 (or 2574 counting only the distinct ones).

The product of its digits is 7225344, while the sum is 60.

The square root of 198477888 is about 14088.2180562341. The cubic root of 198477888 is about 583.3162072432.

The spelling of 198477888 in words is "one hundred ninety-eight million, four hundred seventy-seven thousand, eight hundred eighty-eight".