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268000280 = 2356700007
BaseRepresentation
bin11111111100101…
…01110000011000
3200200021211021022
433332111300120
51022102002110
642332102012
76432651632
oct1776256030
9620254238
10268000280
11128308639
1275904908
13436a5862
1427843a52
15187dc755
hexff95c18

268000280 has 16 divisors (see below), whose sum is σ = 603000720. Its totient is φ = 107200096.

The previous prime is 268000273. The next prime is 268000283. The reversal of 268000280 is 82000862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268000283) 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, 3349964 + ... + 3350043.

It is an arithmetic number, because the mean of its divisors is an integer number (37687545).

Almost surely, 2268000280 is an apocalyptic number.

268000280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

268000280 is an abundant number, since it is smaller than the sum of its proper divisors (335000440).

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

268000280 is a wasteful number, since it uses less digits than its factorization.

268000280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6700018 (or 6700014 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 268000280 is about 16370.7140956038. The cubic root of 268000280 is about 644.7307972596.

The spelling of 268000280 in words is "two hundred sixty-eight million, two hundred eighty", and thus it is an aban number.

Divisors: 1 2 4 5 8 10 20 40 6700007 13400014 26800028 33500035 53600056 67000070 134000140 268000280