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198481205 = 51321741337
BaseRepresentation
bin10111101010010…
…01010100110101
3111211110220000202
423311021110311
5401302344310
631410050245
74630030256
oct1365112465
9454426022
10198481205
11a204595a
1256579985
1332174c00
141c508b2d
15126593a5
hexbd49535

198481205 has 48 divisors (see below), whose sum is σ = 280569744. Its totient is φ = 134184960.

The previous prime is 198481193. The next prime is 198481211. The reversal of 198481205 is 502184891.

It can be written as a sum of positive squares in 24 ways, for example, as 197514916 + 966289 = 14054^2 + 983^2 .

It is not a de Polignac number, because 198481205 - 28 = 198480949 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 588797 + ... + 589133.

It is an arithmetic number, because the mean of its divisors is an integer number (5845203).

Almost surely, 2198481205 is an apocalyptic number.

It is an amenable number.

198481205 is a deficient number, since it is larger than the sum of its proper divisors (82088539).

198481205 is a wasteful number, since it uses less digits than its factorization.

198481205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426 (or 413 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 38.

The square root of 198481205 is about 14088.3357782245. The cubic root of 198481205 is about 583.3194567221.

The spelling of 198481205 in words is "one hundred ninety-eight million, four hundred eighty-one thousand, two hundred five".

Divisors: 1 5 13 17 41 65 85 169 205 221 337 533 697 845 1105 1685 2665 2873 3485 4381 5729 6929 9061 13817 14365 21905 28645 34645 45305 56953 69085 74477 117793 179621 234889 284765 372385 588965 898105 968201 1174445 2335073 3053557 4841005 11675365 15267785 39696241 198481205