198938712 has 64 divisors (see below), whose sum is σ = 570988800. Its totient is φ = 56580480.

The previous prime is 198938711. The next prime is 198938713. The reversal of 198938712 is 217839891.

198938712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (198938711) and next prime (198938713).

It is a super-2 number, since 2×198938712² = 79153222264437888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198938711) 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, 35887 + ... + 41057.

It is an arithmetic number, because the mean of its divisors is an integer number (8921700).

Almost surely, 2^198938712 is an apocalyptic number.

198938712 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 198938712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285494400).

198938712 is an abundant number, since it is smaller than the sum of its proper divisors (372050088).

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

198938712 is a wasteful number, since it uses less digits than its factorization.

198938712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5416 (or 5412 counting only the distinct ones).

The product of its digits is 217728, while the sum is 48.

The square root of 198938712 is about 14104.5635168197. The cubic root of 198938712 is about 583.7673042418.

The spelling of 198938712 in words is "one hundred ninety-eight million, nine hundred thirty-eight thousand, seven hundred twelve".