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228785060 = 225729371523
BaseRepresentation
bin11011010001011…
…11101110100100
3120221111111002202
431220233232210
5432032110220
634411354032
75445432560
oct1550575644
9527444082
10228785060
11108163669
1264752918
133852529a
14225566a0
1515143275
hexda2fba4

228785060 has 96 divisors (see below), whose sum is σ = 583752960. Its totient is φ = 73640448.

The previous prime is 228785041. The next prime is 228785087. The reversal of 228785060 is 60587822.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 149459 + ... + 150981.

It is an arithmetic number, because the mean of its divisors is an integer number (6080760).

Almost surely, 2228785060 is an apocalyptic number.

228785060 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 228785060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291876480).

228785060 is an abundant number, since it is smaller than the sum of its proper divisors (354967900).

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

228785060 is a wasteful number, since it uses less digits than its factorization.

228785060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605 (or 1603 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 228785060 is about 15125.6424656938. The cubic root of 228785060 is about 611.6118439465.

The spelling of 228785060 in words is "two hundred twenty-eight million, seven hundred eighty-five thousand, sixty".

Divisors: 1 2 4 5 7 10 14 20 28 29 35 37 58 70 74 116 140 145 148 185 203 259 290 370 406 518 580 740 812 1015 1036 1073 1295 1523 2030 2146 2590 3046 4060 4292 5180 5365 6092 7511 7615 10661 10730 15022 15230 21322 21460 30044 30460 37555 42644 44167 53305 56351 75110 88334 106610 112702 150220 176668 213220 220835 225404 281755 309169 394457 441670 563510 618338 788914 883340 1127020 1236676 1545845 1577828 1634179 1972285 3091690 3268358 3944570 6183380 6536716 7889140 8170895 11439253 16341790 22878506 32683580 45757012 57196265 114392530 228785060