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28069073184 = 25317169310159
BaseRepresentation
bin11010001001000011…
…000001000100100000
32200110011220122202010
4122021003001010200
5424441140320214
620521133352520
72012402120415
oct321103010440
980404818663
1028069073184
11109a4295149
125534338740
132854323759
141503c1010c
15ae435c659
hex6890c1120

28069073184 has 96 divisors (see below), whose sum is σ = 78069277440. Its totient is φ = 8799916032.

The previous prime is 28069073171. The next prime is 28069073203. The reversal of 28069073184 is 48137096082.

It is a tau number, because it is divible by the number of its divisors (96).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 2757897 + ... + 2768055.

It is an arithmetic number, because the mean of its divisors is an integer number (813221640).

Almost surely, 228069073184 is an apocalyptic number.

28069073184 is a gapful number since it is divisible by the number (24) 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 28069073184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39034638720).

28069073184 is an abundant number, since it is smaller than the sum of its proper divisors (50000204256).

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

28069073184 is a wasteful number, since it uses less digits than its factorization.

28069073184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11882 (or 11874 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 28069073184 in words is "twenty-eight billion, sixty-nine million, seventy-three thousand, one hundred eighty-four".

Divisors: 1 2 3 4 6 8 12 16 17 24 32 34 48 51 68 96 102 136 204 272 408 544 816 1632 1693 3386 5079 6772 10158 10159 13544 20316 20318 27088 28781 30477 40632 40636 54176 57562 60954 81264 81272 86343 115124 121908 162528 162544 172686 172703 230248 243816 325088 345372 345406 460496 487632 518109 690744 690812 920992 975264 1036218 1381488 1381624 2072436 2762976 2763248 4144872 5526496 8289744 16579488 17199187 34398374 51597561 68796748 103195122 137593496 206390244 275186992 292386179 412780488 550373984 584772358 825560976 877158537 1169544716 1651121952 1754317074 2339089432 3508634148 4678178864 7017268296 9356357728 14034536592 28069073184