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198908008 = 23131912577
BaseRepresentation
bin10111101101100…
…01100001101000
3111212021120111021
423312301201220
5401410024013
631423142224
74633455505
oct1366614150
9455246437
10198908008
11a2307592
1256744974
1332294260
141c5ba4ac
15126e0a8d
hexbdb1868

198908008 has 16 divisors (see below), whose sum is σ = 401641380. Its totient is φ = 91803648.

The previous prime is 198907963. The next prime is 198908009. The reversal of 198908008 is 800809891.

198908008 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 198302724 + 605284 = 14082^2 + 778^2 .

It is not an unprimeable number, because it can be changed into a prime (198908009) 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, 956185 + ... + 956392.

Almost surely, 2198908008 is an apocalyptic number.

It is an amenable number.

198908008 is an abundant number, since it is smaller than the sum of its proper divisors (202733372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

198908008 is a wasteful number, since it uses less digits than its factorization.

198908008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912596 (or 1912592 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 43.

The square root of 198908008 is about 14103.4750327712. The cubic root of 198908008 is about 583.7372700111.

The spelling of 198908008 in words is "one hundred ninety-eight million, nine hundred eight thousand, eight".

Divisors: 1 2 4 8 13 26 52 104 1912577 3825154 7650308 15300616 24863501 49727002 99454004 198908008