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28994375380608 = 2732112288066239
BaseRepresentation
bin1101001011110110001110…
…11100011110111010000000
310210122211112212120001201100
412211323013130132322000
512300020440044134413
6141355455425334400
76051526436225001
oct645730734367200
9123584485501640
1028994375380608
11926949a025390
123303379797400
131324208aa9371
14723499d2b1a8
15354324878a73
hex1a5ec771ee80

28994375380608 has 96 divisors (see below), whose sum is σ = 91019275027200. Its totient is φ = 8786174353920.

The previous prime is 28994375380601. The next prime is 28994375380681. The reversal of 28994375380608 is 80608357349982.

28994375380608 is a `hidden beast` number, since 2 + 8 + 9 + 9 + 4 + 3 + 7 + 5 + 3 + 8 + 0 + 608 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (28994375380601) 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, 1144020448 + ... + 1144045791.

It is an arithmetic number, because the mean of its divisors is an integer number (948117448200).

Almost surely, 228994375380608 is an apocalyptic number.

It is an amenable number.

28994375380608 is an abundant number, since it is smaller than the sum of its proper divisors (62024899646592).

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

28994375380608 is a wasteful number, since it uses less digits than its factorization.

28994375380608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2288066270 (or 2288066255 counting only the distinct ones).

The product of its (nonzero) digits is 627056640, while the sum is 72.

The spelling of 28994375380608 in words is "twenty-eight trillion, nine hundred ninety-four billion, three hundred seventy-five million, three hundred eighty thousand, six hundred eight".

Divisors: 1 2 3 4 6 8 9 11 12 16 18 22 24 32 33 36 44 48 64 66 72 88 96 99 128 132 144 176 192 198 264 288 352 384 396 528 576 704 792 1056 1152 1408 1584 2112 3168 4224 6336 12672 2288066239 4576132478 6864198717 9152264956 13728397434 18304529912 20592596151 25168728629 27456794868 36609059824 41185192302 50337457258 54913589736 73218119648 75506185887 82370384604 100674914516 109827179472 146436239296 151012371774 164740769208 201349829032 219654358944 226518557661 292872478592 302024743548 329481538416 402699658064 439308717888 453037115322 604049487096 658963076832 805399316128 878617435776 906074230644 1208098974192 1317926153664 1610798632256 1812148461288 2416197948384 2635852307328 3221597264512 3624296922576 4832395896768 7248593845152 9664791793536 14497187690304 28994375380608