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256900060 = 2254326947
BaseRepresentation
bin11110100111111…
…11101111011100
3122220101212122001
433103333233130
51011231300220
641254132044
76236420524
oct1723775734
9586355561
10256900060
111220168aa
1272051024
13412ba291
1426194684
151784880a
hexf4ffbdc

256900060 has 36 divisors (see below), whose sum is σ = 552407688. Its totient is φ = 100355808.

The previous prime is 256900051. The next prime is 256900099. The reversal of 256900060 is 60009652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33507 + ... + 40453.

It is an arithmetic number, because the mean of its divisors is an integer number (15344658).

Almost surely, 2256900060 is an apocalyptic number.

256900060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256900060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276203844).

256900060 is an abundant number, since it is smaller than the sum of its proper divisors (295507628).

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

256900060 is a wasteful number, since it uses less digits than its factorization.

256900060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7042 (or 6997 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 256900060 is about 16028.1021958309. The cubic root of 256900060 is about 635.7036942344.

The spelling of 256900060 in words is "two hundred fifty-six million, nine hundred thousand, sixty".

Divisors: 1 2 4 5 10 20 43 86 172 215 430 860 1849 3698 6947 7396 9245 13894 18490 27788 34735 36980 69470 138940 298721 597442 1194884 1493605 2987210 5974420 12845003 25690006 51380012 64225015 128450030 256900060