198278744 has 16 divisors (see below), whose sum is σ = 371945520. Its totient is φ = 99093280.

The previous prime is 198278711. The next prime is 198278749. The reversal of 198278744 is 447872891.

It is a junction number, because it is equal to n+sod(n) for n = 198278692 and 198278701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198278749) 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, 18557 + ... + 27219.

It is an arithmetic number, because the mean of its divisors is an integer number (23246595).

Almost surely, 2^198278744 is an apocalyptic number.

It is an amenable number.

198278744 is a deficient number, since it is larger than the sum of its proper divisors (173666776).

198278744 is a wasteful number, since it uses less digits than its factorization.

198278744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11530 (or 11526 counting only the distinct ones).

The product of its digits is 903168, while the sum is 50.

The square root of 198278744 is about 14081.1485327014. The cubic root of 198278744 is about 583.1210506662.

The spelling of 198278744 in words is "one hundred ninety-eight million, two hundred seventy-eight thousand, seven hundred forty-four".