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28937228000 = 255319380753
BaseRepresentation
bin11010111100110010…
…110000111011100000
32202200200111111021012
4122330302300323200
5433230412244000
621143225120052
72043043244132
oct327462607340
982620444235
1028937228000
11112aa34676a
125737029028
13296214a325
14158723b052
15b45698735
hex6bccb0ee0

28937228000 has 96 divisors (see below), whose sum is σ = 74841006240. Its totient is φ = 10965657600.

The previous prime is 28937227999. The next prime is 28937228017. The reversal of 28937228000 is 82273982.

It is a congruent number.

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, 114377 + ... + 266376.

It is an arithmetic number, because the mean of its divisors is an integer number (779593815).

Almost surely, 228937228000 is an apocalyptic number.

28937228000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28937228000 is an abundant number, since it is smaller than the sum of its proper divisors (45903778240).

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

28937228000 is a wasteful number, since it uses less digits than its factorization.

28937228000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380797 (or 380779 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The spelling of 28937228000 in words is "twenty-eight billion, nine hundred thirty-seven million, two hundred twenty-eight thousand".

Divisors: 1 2 4 5 8 10 16 19 20 25 32 38 40 50 76 80 95 100 125 152 160 190 200 250 304 380 400 475 500 608 760 800 950 1000 1520 1900 2000 2375 3040 3800 4000 4750 7600 9500 15200 19000 38000 76000 380753 761506 1523012 1903765 3046024 3807530 6092048 7234307 7615060 9518825 12184096 14468614 15230120 19037650 28937228 30460240 36171535 38075300 47594125 57874456 60920480 72343070 76150600 95188250 115748912 144686140 152301200 180857675 190376500 231497824 289372280 304602400 361715350 380753000 578744560 723430700 761506000 904288375 1157489120 1446861400 1523012000 1808576750 2893722800 3617153500 5787445600 7234307000 14468614000 28937228000