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200906680 = 235131722727
BaseRepresentation
bin10111111100110…
…01011110111000
3112000001010011011
423332121132320
5402413003210
631534043304
74656451522
oct1376313670
9460033134
10200906680
11a3452187
1257349534
1332813bc0
141c97aa12
1512987d8a
hexbf997b8

200906680 has 64 divisors (see below), whose sum is σ = 515471040. Its totient is φ = 69814272.

The previous prime is 200906677. The next prime is 200906687. The reversal of 200906680 is 86609002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200906687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2524 + ... + 20203.

It is an arithmetic number, because the mean of its divisors is an integer number (8054235).

Almost surely, 2200906680 is an apocalyptic number.

200906680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200906680 is an abundant number, since it is smaller than the sum of its proper divisors (314564360).

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

200906680 is a wasteful number, since it uses less digits than its factorization.

200906680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22768 (or 22764 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 200906680 is about 14174.1553540237. The cubic root of 200906680 is about 585.6859317171.

The spelling of 200906680 in words is "two hundred million, nine hundred six thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 13 17 20 26 34 40 52 65 68 85 104 130 136 170 221 260 340 442 520 680 884 1105 1768 2210 4420 8840 22727 45454 90908 113635 181816 227270 295451 386359 454540 590902 772718 909080 1181804 1477255 1545436 1931795 2363608 2954510 3090872 3863590 5022667 5909020 7727180 10045334 11818040 15454360 20090668 25113335 40181336 50226670 100453340 200906680