207990198 has 48 divisors (see below), whose sum is σ = 491203440. Its totient is φ = 63220032.

The previous prime is 207990193. The next prime is 207990199. The reversal of 207990198 is 891099702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207990193) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14068 + ... + 24776.

It is an arithmetic number, because the mean of its divisors is an integer number (10233405).

Almost surely, 2^207990198 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 207990198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245601720).

207990198 is an abundant number, since it is smaller than the sum of its proper divisors (283213242).

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

207990198 is a wasteful number, since it uses less digits than its factorization.

207990198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10813 (or 10810 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 207990198 is about 14421.8652746446. The cubic root of 207990198 is about 592.4899063601.

The spelling of 207990198 in words is "two hundred seven million, nine hundred ninety thousand, one hundred ninety-eight".