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28212010848 = 2532713994053
BaseRepresentation
bin11010010001100100…
…010001111101100000
32200211010212122100200
4122101210101331200
5430234233321343
620543241145200
72016056064330
oct322144217540
980733778320
1028212010848
1110a67a4334a
12557418b200
132877b1bc58
141518bbb0c0
15b01b944d3
hex691911f60

28212010848 has 72 divisors (see below), whose sum is σ = 91689041808. Its totient is φ = 8060573952.

The previous prime is 28212010847. The next prime is 28212010861. The reversal of 28212010848 is 84801021282.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28212010843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6995011 + ... + 6999042.

It is an arithmetic number, because the mean of its divisors is an integer number (1273458914).

Almost surely, 228212010848 is an apocalyptic number.

28212010848 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28212010848 is an abundant number, since it is smaller than the sum of its proper divisors (63477030960).

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

28212010848 is a wasteful number, since it uses less digits than its factorization.

28212010848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13994076 (or 13994065 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 36.

The spelling of 28212010848 in words is "twenty-eight billion, two hundred twelve million, ten thousand, eight hundred forty-eight".

Divisors: 1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 32 36 42 48 56 63 72 84 96 112 126 144 168 224 252 288 336 504 672 1008 2016 13994053 27988106 41982159 55976212 83964318 97958371 111952424 125946477 167928636 195916742 223904848 251892954 293875113 335857272 391833484 447809696 503785908 587750226 671714544 783666968 881625339 1007571816 1175500452 1343429088 1567333936 1763250678 2015143632 2351000904 3134667872 3526501356 4030287264 4702001808 7053002712 9404003616 14106005424 28212010848