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28458749760 = 263574234933
BaseRepresentation
bin11010100000010001…
…100000111101000000
32201110100011021111220
4122200101200331000
5431240414443020
621023533435040
72025143244630
oct324021407500
981410137456
1028458749760
1111084249a01
12562293ba80
1328b6c8c1cc
14153d8886c0
15b18682240
hex6a0460f40

28458749760 has 112 divisors (see below), whose sum is σ = 103264630656. Its totient is φ = 6504855552.

The previous prime is 28458749719. The next prime is 28458749783. The reversal of 28458749760 is 6794785482.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 28458749694 and 28458749703.

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, 2110747 + ... + 2124186.

Almost surely, 228458749760 is an apocalyptic number.

28458749760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28458749760 is an abundant number, since it is smaller than the sum of its proper divisors (74805880896).

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

28458749760 is a wasteful number, since it uses less digits than its factorization.

28458749760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4234960 (or 4234950 counting only the distinct ones).

The product of its (nonzero) digits is 27095040, while the sum is 60.

The spelling of 28458749760 in words is "twenty-eight billion, four hundred fifty-eight million, seven hundred forty-nine thousand, seven hundred sixty".

Divisors: 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 32 35 40 42 48 56 60 64 70 80 84 96 105 112 120 140 160 168 192 210 224 240 280 320 336 420 448 480 560 672 840 960 1120 1344 1680 2240 3360 6720 4234933 8469866 12704799 16939732 21174665 25409598 29644531 33879464 42349330 50819196 59289062 63523995 67758928 84698660 88933593 101638392 118578124 127047990 135517856 148222655 169397320 177867186 203276784 237156248 254095980 271035712 296445310 338794640 355734372 406553568 444667965 474312496 508191960 592890620 677589280 711468744 813107136 889335930 948624992 1016383920 1185781240 1355178560 1422937488 1778671860 1897249984 2032767840 2371562480 2845874976 3557343720 4065535680 4743124960 5691749952 7114687440 9486249920 14229374880 28458749760