198102612 has 48 divisors (see below), whose sum is σ = 472953600. Its totient is φ = 64521600.

The previous prime is 198102587. The next prime is 198102613. The reversal of 198102612 is 216201891.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 198102612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198102613) 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, 94714 + ... + 96782.

It is an arithmetic number, because the mean of its divisors is an integer number (9853200).

Almost surely, 2^198102612 is an apocalyptic number.

198102612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

198102612 is an abundant number, since it is smaller than the sum of its proper divisors (274850988).

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

198102612 is a wasteful number, since it uses less digits than its factorization.

198102612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256 (or 2254 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 198102612 is about 14074.8929658452. The cubic root of 198102612 is about 582.9483363999.

It can be divided in two parts, 19810 and 2612, that added together give a palindrome (22422).

The spelling of 198102612 in words is "one hundred ninety-eight million, one hundred two thousand, six hundred twelve".