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128050936 = 231317234767
BaseRepresentation
bin1111010000111…
…10011011111000
322220221122212021
413220132123320
5230240112221
620412324224
73113262226
oct750363370
9286848767
10128050936
1166310622
1236a73674
13206b55b0
1413013b16
15b396041
hex7a1e6f8

128050936 has 128 divisors (see below), whose sum is σ = 296110080. Its totient is φ = 51296256.

The previous prime is 128050891. The next prime is 128050957. The reversal of 128050936 is 639050821.

It is a Harshad number since it is a multiple of its sum of digits (34).

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, 1911175 + ... + 1911241.

It is an arithmetic number, because the mean of its divisors is an integer number (2313360).

Almost surely, 2128050936 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 128050936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148055040).

128050936 is an abundant number, since it is smaller than the sum of its proper divisors (168059144).

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

128050936 is a wasteful number, since it uses less digits than its factorization.

128050936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 128050936 is about 11315.9593495205. The cubic root of 128050936 is about 504.0352604037.

The spelling of 128050936 in words is "one hundred twenty-eight million, fifty thousand, nine hundred thirty-six".

Divisors: 1 2 4 8 13 17 23 26 34 46 47 52 67 68 92 94 104 134 136 184 188 221 268 299 376 391 442 536 598 611 782 799 871 884 1081 1139 1196 1222 1541 1564 1598 1742 1768 2162 2278 2392 2444 3082 3128 3149 3196 3484 4324 4556 4888 5083 6164 6298 6392 6968 8648 9112 10166 10387 12328 12596 14053 14807 18377 20033 20332 20774 25192 26197 28106 29614 36754 40066 40664 40937 41548 52394 53533 56212 59228 72427 73508 80132 81874 83096 104788 107066 112424 118456 144854 147016 160264 163748 209576 214132 238901 289708 327496 340561 428264 477802 579416 681122 695929 941551 955604 1231259 1362244 1391858 1883102 1911208 2462518 2724488 2783716 3766204 4925036 5567432 7532408 9850072 16006367 32012734 64025468 128050936