198857004 has 12 divisors (see below), whose sum is σ = 463999704. Its totient is φ = 66285664.

The previous prime is 198857003. The next prime is 198857017. The reversal of 198857004 is 400758891.

198857004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (198857003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8285697 + ... + 8285720.

It is an arithmetic number, because the mean of its divisors is an integer number (38666642).

Almost surely, 2^198857004 is an apocalyptic number.

It is an amenable number.

198857004 is an abundant number, since it is smaller than the sum of its proper divisors (265142700).

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

198857004 is a wasteful number, since it uses less digits than its factorization.

198857004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16571424 (or 16571422 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 198857004 is about 14101.6667100028. Note that the first 3 decimals coincide. The cubic root of 198857004 is about 583.6873717673.

The spelling of 198857004 in words is "one hundred ninety-eight million, eight hundred fifty-seven thousand, four".