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228382836 = 2231173137173
BaseRepresentation
bin11011001110011…
…01100001110100
3120220202001100120
431213031201310
5431431222321
634355011540
75442136113
oct1547154164
9526661316
10228382836
11107a09450
1264599bb0
1338414196
142248dc7a
15150b3ec6
hexd9cd874

228382836 has 96 divisors (see below), whose sum is σ = 597034368. Its totient is φ = 67368960.

The previous prime is 228382829. The next prime is 228382849. The reversal of 228382836 is 638283822.

It is a congruent number.

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, 1320046 + ... + 1320218.

It is an arithmetic number, because the mean of its divisors is an integer number (6219108).

Almost surely, 2228382836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228382836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298517184).

228382836 is an abundant number, since it is smaller than the sum of its proper divisors (368651532).

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

228382836 is a wasteful number, since it uses less digits than its factorization.

228382836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401 (or 399 counting only the distinct ones).

The product of its digits is 221184, while the sum is 42.

The square root of 228382836 is about 15112.3405202503. The cubic root of 228382836 is about 611.2532114535.

The spelling of 228382836 in words is "two hundred twenty-eight million, three hundred eighty-two thousand, eight hundred thirty-six".

Divisors: 1 2 3 4 6 11 12 22 33 44 66 73 132 137 146 173 219 274 292 346 411 438 519 548 692 803 822 876 1038 1507 1606 1644 1903 2076 2409 3014 3212 3806 4521 4818 5709 6028 7612 9042 9636 10001 11418 12629 18084 20002 22836 23701 25258 30003 37887 40004 47402 50516 60006 71103 75774 94804 110011 120012 138919 142206 151548 220022 260711 277838 284412 330033 416757 440044 521422 555676 660066 782133 833514 1042844 1320132 1564266 1667028 1730173 3128532 3460346 5190519 6920692 10381038 19031903 20762076 38063806 57095709 76127612 114191418 228382836