198752445 has 24 divisors (see below), whose sum is σ = 362637600. Its totient is φ = 100421856.

The previous prime is 198752429. The next prime is 198752447. The reversal of 198752445 is 544257891.

198752445 is a `hidden beast` number, since 1 + 9 + 87 + 524 + 45 = 666.

It is not a de Polignac number, because 198752445 - 2⁴ = 198752429 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 198752445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198752447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115375 + ... + 117084.

It is an arithmetic number, because the mean of its divisors is an integer number (15109900).

Almost surely, 2^198752445 is an apocalyptic number.

198752445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

198752445 is a deficient number, since it is larger than the sum of its proper divisors (163885155).

198752445 is a wasteful number, since it uses less digits than its factorization.

198752445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232489 (or 232486 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 198752445 is about 14097.9588948188. The cubic root of 198752445 is about 583.5850529045.

The spelling of 198752445 in words is "one hundred ninety-eight million, seven hundred fifty-two thousand, four hundred forty-five".