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28426160 = 2457232207
BaseRepresentation
bin110110001101…
…1111110110000
31222111012100202
41230123332300
524234114120
62453134332
7463422050
oct154337660
958435322
1028426160
1115055aa4
12962a3a8
135b73819
143abd560
152767875
hex1b1bfb0

28426160 has 80 divisors (see below), whose sum is σ = 78852096. Its totient is φ = 9318144.

The previous prime is 28426129. The next prime is 28426171. The reversal of 28426160 is 6162482.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11777 + ... + 13983.

Almost surely, 228426160 is an apocalyptic number.

28426160 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 28426160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39426048).

28426160 is an abundant number, since it is smaller than the sum of its proper divisors (50425936).

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

28426160 is a wasteful number, since it uses less digits than its factorization.

28426160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2250 (or 2244 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 28426160 is about 5331.6188911062. The cubic root of 28426160 is about 305.1917096277.

The spelling of 28426160 in words is "twenty-eight million, four hundred twenty-six thousand, one hundred sixty".

Divisors: 1 2 4 5 7 8 10 14 16 20 23 28 35 40 46 56 70 80 92 112 115 140 161 184 230 280 322 368 460 560 644 805 920 1288 1610 1840 2207 2576 3220 4414 6440 8828 11035 12880 15449 17656 22070 30898 35312 44140 50761 61796 77245 88280 101522 123592 154490 176560 203044 247184 253805 308980 355327 406088 507610 617960 710654 812176 1015220 1235920 1421308 1776635 2030440 2842616 3553270 4060880 5685232 7106540 14213080 28426160