198431004 has 24 divisors (see below), whose sum is σ = 490241808. Its totient is φ = 62252800.

The previous prime is 198430961. The next prime is 198431011. The reversal of 198431004 is 400134891.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 486147 + ... + 486554.

It is an arithmetic number, because the mean of its divisors is an integer number (20426742).

Almost surely, 2^198431004 is an apocalyptic number.

It is an amenable number.

198431004 is an abundant number, since it is smaller than the sum of its proper divisors (291810804).

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

198431004 is a wasteful number, since it uses less digits than its factorization.

198431004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972725 (or 972723 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 198431004 is about 14086.5540143784. The cubic root of 198431004 is about 583.2702737457.

Adding to 198431004 its reverse (400134891), we get a palindrome (598565895).

The spelling of 198431004 in words is "one hundred ninety-eight million, four hundred thirty-one thousand, four".