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228759960 = 2335111313331
BaseRepresentation
bin11011010001010…
…01100110011000
3120221110012200010
431220221212120
5432030304320
634411041520
75445266442
oct1550514630
9527405603
10228759960
11108146820
12647402a0
1338516a30
142254b492
151513aae0
hexda29998

228759960 has 128 divisors (see below), whose sum is σ = 806319360. Its totient is φ = 51187200.

The previous prime is 228759913. The next prime is 228759967. The reversal of 228759960 is 69957822.

It is a super-2 number, since 2×2287599602 = 104662238598403200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228759967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10495 + ... + 23825.

It is an arithmetic number, because the mean of its divisors is an integer number (6299370).

Almost surely, 2228759960 is an apocalyptic number.

228759960 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 228759960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (403159680).

228759960 is an abundant number, since it is smaller than the sum of its proper divisors (577559400).

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

228759960 is a wasteful number, since it uses less digits than its factorization.

228759960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13369 (or 13365 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 228759960 is about 15124.8127261133. The cubic root of 228759960 is about 611.5894764914.

The spelling of 228759960 in words is "two hundred twenty-eight million, seven hundred fifty-nine thousand, nine hundred sixty".

Divisors: 1 2 3 4 5 6 8 10 11 12 13 15 20 22 24 26 30 33 39 40 44 52 55 60 65 66 78 88 104 110 120 130 132 143 156 165 195 220 260 264 286 312 330 390 429 440 520 572 660 715 780 858 1144 1320 1430 1560 1716 2145 2860 3432 4290 5720 8580 13331 17160 26662 39993 53324 66655 79986 106648 133310 146641 159972 173303 199965 266620 293282 319944 346606 399930 439923 519909 533240 586564 693212 733205 799860 866515 879846 1039818 1173128 1386424 1466410 1599720 1733030 1759692 1906333 2079636 2199615 2599545 2932820 3466060 3519384 3812666 4159272 4399230 5199090 5718999 5865640 6932120 7625332 8798460 9531665 10398180 11437998 15250664 17596920 19063330 20796360 22875996 28594995 38126660 45751992 57189990 76253320 114379980 228759960