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26128960 = 2651113571
BaseRepresentation
bin110001110101…
…1001001000000
31211011111012021
41203223021000
523142111320
62332011224
7435043504
oct143531100
954144167
1026128960
1113827090
128900b14
13554b030
143682304
152461daa
hex18eb240

26128960 has 112 divisors (see below), whose sum is σ = 73225152. Its totient is φ = 8755200.

The previous prime is 26128957. The next prime is 26128961. The reversal of 26128960 is 6982162.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (26128961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45475 + ... + 46045.

It is an arithmetic number, because the mean of its divisors is an integer number (653796).

Almost surely, 226128960 is an apocalyptic number.

26128960 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 26128960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36612576).

26128960 is an abundant number, since it is smaller than the sum of its proper divisors (47096192).

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

26128960 is a wasteful number, since it uses less digits than its factorization.

26128960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612 (or 602 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 26128960 is about 5111.6494402492. The cubic root of 26128960 is about 296.7385986132.

The spelling of 26128960 in words is "twenty-six million, one hundred twenty-eight thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 11 13 16 20 22 26 32 40 44 52 55 64 65 80 88 104 110 130 143 160 176 208 220 260 286 320 352 416 440 520 571 572 704 715 832 880 1040 1142 1144 1430 1760 2080 2284 2288 2855 2860 3520 4160 4568 4576 5710 5720 6281 7423 9136 9152 11420 11440 12562 14846 18272 22840 22880 25124 29692 31405 36544 37115 45680 45760 50248 59384 62810 74230 81653 91360 100496 118768 125620 148460 163306 182720 200992 237536 251240 296920 326612 401984 408265 475072 502480 593840 653224 816530 1004960 1187680 1306448 1633060 2009920 2375360 2612896 3266120 5225792 6532240 13064480 26128960