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28041160 = 23571743137
BaseRepresentation
bin110101011110…
…1111111001000
31221202122020111
41222331333020
524134304120
62441004104
7460226440
oct152757710
957678214
1028041160
1114912814
129483634
135a6a504
143a1d120
1526dd75a
hex1abdfc8

28041160 has 128 divisors (see below), whose sum is σ = 78693120. Its totient is φ = 8773632.

The previous prime is 28041149. The next prime is 28041161. The reversal of 28041160 is 6114082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28041161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 204612 + ... + 204748.

It is an arithmetic number, because the mean of its divisors is an integer number (614790).

Almost surely, 228041160 is an apocalyptic number.

28041160 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 28041160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39346560).

28041160 is an abundant number, since it is smaller than the sum of its proper divisors (50651960).

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

28041160 is a wasteful number, since it uses less digits than its factorization.

28041160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 28041160 is about 5295.3904483050. The cubic root of 28041160 is about 303.8076171982.

The spelling of 28041160 in words is "twenty-eight million, forty-one thousand, one hundred sixty".

Divisors: 1 2 4 5 7 8 10 14 17 20 28 34 35 40 43 56 68 70 85 86 119 136 137 140 170 172 215 238 274 280 301 340 344 430 476 548 595 602 680 685 731 860 952 959 1096 1190 1204 1370 1462 1505 1720 1918 2329 2380 2408 2740 2924 3010 3655 3836 4658 4760 4795 5117 5480 5848 5891 6020 7310 7672 9316 9590 10234 11645 11782 12040 14620 16303 18632 19180 20468 23290 23564 25585 29240 29455 32606 38360 40936 41237 46580 47128 51170 58910 65212 81515 82474 93160 100147 102340 117820 130424 163030 164948 200294 204680 206185 235640 326060 329896 400588 412370 500735 652120 701029 801176 824740 1001470 1402058 1649480 2002940 2804116 3505145 4005880 5608232 7010290 14020580 28041160