198272751 has 32 divisors (see below), whose sum is σ = 289578240. Its totient is φ = 120162816.

The previous prime is 198272747. The next prime is 198272791. The reversal of 198272751 is 157272891.

It is not a de Polignac number, because 198272751 - 2² = 198272747 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198272741) 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, 337480 + ... + 338066.

It is an arithmetic number, because the mean of its divisors is an integer number (9049320).

Almost surely, 2^198272751 is an apocalyptic number.

198272751 is a deficient number, since it is larger than the sum of its proper divisors (91305489).

198272751 is a wasteful number, since it uses less digits than its factorization.

198272751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823.

The product of its digits is 70560, while the sum is 42.

The square root of 198272751 is about 14080.9357288498. The cubic root of 198272751 is about 583.1151756380.

It can be divided in two parts, 19827 and 2751, that added together give a triangular number (22578 = T₂₁₂).

The spelling of 198272751 in words is "one hundred ninety-eight million, two hundred seventy-two thousand, seven hundred fifty-one".