198761264 has 40 divisors (see below), whose sum is σ = 415931712. Its totient is φ = 91468800.

The previous prime is 198761249. The next prime is 198761267. The reversal of 198761264 is 462167891.

It is not an unprimeable number, because it can be changed into a prime (198761267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82217 + ... + 84599.

Almost surely, 2^198761264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198761264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207965856).

198761264 is an abundant number, since it is smaller than the sum of its proper divisors (217170448).

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

198761264 is a wasteful number, since it uses less digits than its factorization.

198761264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2805 (or 2799 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 198761264 is about 14098.2716671229. The cubic root of 198761264 is about 583.5936843462.

The spelling of 198761264 in words is "one hundred ninety-eight million, seven hundred sixty-one thousand, two hundred sixty-four".