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208130306888 = 23728031325941
BaseRepresentation
bin1100000111010110001…
…0000111001101001000
3201220012221220001211202
43001311202013031020
511402222324310023
6235340322443332
721015443263430
oct3016542071510
9656187801752
10208130306888
11802a4150099
1234406503548
131681b85765a
14a105bc92c0
15563210e128
hex3075887348

208130306888 has 32 divisors (see below), whose sum is σ = 446152964160. Its totient is φ = 89166813120.

The previous prime is 208130306837. The next prime is 208130306933. The reversal of 208130306888 is 888603031802.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506003 + ... + 819938.

It is an arithmetic number, because the mean of its divisors is an integer number (13942280130).

Almost surely, 2208130306888 is an apocalyptic number.

208130306888 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

208130306888 is an abundant number, since it is smaller than the sum of its proper divisors (238022657272).

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

208130306888 is a wasteful number, since it uses less digits than its factorization.

208130306888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328757 (or 1328753 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 47.

The spelling of 208130306888 in words is "two hundred eight billion, one hundred thirty million, three hundred six thousand, eight hundred eighty-eight".

Divisors: 1 2 4 7 8 14 28 56 2803 5606 11212 19621 22424 39242 78484 156968 1325941 2651882 5303764 9281587 10607528 18563174 37126348 74252696 3716612623 7433225246 14866450492 26016288361 29732900984 52032576722 104065153444 208130306888