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228972960 = 2533553003
BaseRepresentation
bin11011010010111…
…01100110100000
3120221212000212000
431221131212200
5432104113320
634415404000
75450144436
oct1551354640
9527760760
10228972960
11108281857
1264823600
133858c978
14225a4d56
151517dc90
hexda5d9a0

228972960 has 96 divisors (see below), whose sum is σ = 801420480. Its totient is φ = 61058304.

The previous prime is 228972937. The next prime is 228972973. The reversal of 228972960 is 69279822.

228972960 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×2289729602 = 104857232822323200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22182 + ... + 30821.

It is an arithmetic number, because the mean of its divisors is an integer number (8348130).

Almost surely, 2228972960 is an apocalyptic number.

228972960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228972960 is an abundant number, since it is smaller than the sum of its proper divisors (572447520).

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

228972960 is a wasteful number, since it uses less digits than its factorization.

228972960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53027 (or 53013 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 228972960 is about 15131.8524972985. The cubic root of 228972960 is about 611.7792360222.

The spelling of 228972960 in words is "two hundred twenty-eight million, nine hundred seventy-two thousand, nine hundred sixty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 32 36 40 45 48 54 60 72 80 90 96 108 120 135 144 160 180 216 240 270 288 360 432 480 540 720 864 1080 1440 2160 4320 53003 106006 159009 212012 265015 318018 424024 477027 530030 636036 795045 848048 954054 1060060 1272072 1431081 1590090 1696096 1908108 2120120 2385135 2544144 2862162 3180180 3816216 4240240 4770270 5088288 5724324 6360360 7155405 7632432 8480480 9540540 11448648 12720720 14310810 15264864 19081080 22897296 25441440 28621620 38162160 45794592 57243240 76324320 114486480 228972960