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268868680 = 23543156319
BaseRepresentation
bin10000000001101…
…001110001001000
3200201220221111021
4100001221301020
51022312244210
642402442224
76443226463
oct2001516110
9621827437
10268868680
11128851023
1276063374
134391abc2
14279cc2da
151890ebda
hex10069c48

268868680 has 32 divisors (see below), whose sum is σ = 619027200. Its totient is φ = 105045696.

The previous prime is 268868669. The next prime is 268868707. The reversal of 268868680 is 86868862.

It is a happy number.

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, 76440 + ... + 79879.

It is an arithmetic number, because the mean of its divisors is an integer number (19344600).

Almost surely, 2268868680 is an apocalyptic number.

268868680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

268868680 is an abundant number, since it is smaller than the sum of its proper divisors (350158520).

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

268868680 is a wasteful number, since it uses less digits than its factorization.

268868680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156373 (or 156369 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 52.

The square root of 268868680 is about 16397.2156172931. The cubic root of 268868680 is about 645.4264191455.

The spelling of 268868680 in words is "two hundred sixty-eight million, eight hundred sixty-eight thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 43 86 172 215 344 430 860 1720 156319 312638 625276 781595 1250552 1563190 3126380 6252760 6721717 13443434 26886868 33608585 53773736 67217170 134434340 268868680