198507012 has 96 divisors (see below), whose sum is σ = 526848000. Its totient is φ = 57628800.

The previous prime is 198507007. The next prime is 198507019. The reversal of 198507012 is 210705891.

198507012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (198507019) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 568614 + ... + 568962.

It is an arithmetic number, because the mean of its divisors is an integer number (5488000).

Almost surely, 2^198507012 is an apocalyptic number.

198507012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198507012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263424000).

198507012 is an abundant number, since it is smaller than the sum of its proper divisors (328340988).

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

198507012 is a wasteful number, since it uses less digits than its factorization.

198507012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537 (or 535 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 198507012 is about 14089.2516479762. The cubic root of 198507012 is about 583.3447371557.

It can be divided in two parts, 19850 and 7012, that added together give a palindrome (26862).

The spelling of 198507012 in words is "one hundred ninety-eight million, five hundred seven thousand, twelve".