198072012 has 12 divisors (see below), whose sum is σ = 462168056. Its totient is φ = 66024000.

The previous prime is 198072011. The next prime is 198072013. The reversal of 198072012 is 210270891.

It is an interprime number because it is at equal distance from previous prime (198072011) and next prime (198072013).

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 (198072011) 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, 8252989 + ... + 8253012.

Almost surely, 2^198072012 is an apocalyptic number.

198072012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

198072012 is an abundant number, since it is smaller than the sum of its proper divisors (264096044).

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

198072012 is a wasteful number, since it uses less digits than its factorization.

198072012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16506008 (or 16506006 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 198072012 is about 14073.8058818502. The cubic root of 198072012 is about 582.9183197375.

The spelling of 198072012 in words is "one hundred ninety-eight million, seventy-two thousand, twelve".