198921752 has 16 divisors (see below), whose sum is σ = 373138440. Its totient is φ = 99418176.

The previous prime is 198921721. The next prime is 198921757. The reversal of 198921752 is 257129891.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198921757) 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, 23843 + ... + 31085.

Almost surely, 2^198921752 is an apocalyptic number.

It is an amenable number.

198921752 is a deficient number, since it is larger than the sum of its proper divisors (174216688).

198921752 is a wasteful number, since it uses less digits than its factorization.

198921752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10682 (or 10678 counting only the distinct ones).

The product of its digits is 90720, while the sum is 44.

The square root of 198921752 is about 14103.9622801538. The cubic root of 198921752 is about 583.7507145851.

The spelling of 198921752 in words is "one hundred ninety-eight million, nine hundred twenty-one thousand, seven hundred fifty-two".