Base | Representation |
---|---|
bin | 1101001011110110001110… |
… | …11100011110111001111111 |
3 | 10210122211112212120001201022 |
4 | 12211323013130132321333 |
5 | 12300020440044134412 |
6 | 141355455425334355 |
7 | 6051526436225000 |
oct | 645730734367177 |
9 | 123584485501638 |
10 | 28994375380607 |
11 | 926949a02538a |
12 | 33033797973bb |
13 | 1324208aa9370 |
14 | 723499d2b1a7 |
15 | 354324878a72 |
hex | 1a5ec771ee7f |
28994375380607 has 32 divisors (see below), whose sum is σ = 37260487756800. Its totient is φ = 22407102113760.
The previous prime is 28994375380601. The next prime is 28994375380681. The reversal of 28994375380607 is 70608357349982.
It is a happy number.
It is not a de Polignac number, because 28994375380607 - 214 = 28994375364223 is a prime.
It is a super-2 number, since 2×289943753806072 (a number of 28 digits) contains 22 as substring.
It is a congruent number.
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 31 ways as a sum of consecutive naturals, for example, 75418019 + ... + 75801492.
It is an arithmetic number, because the mean of its divisors is an integer number (1164390242400).
Almost surely, 228994375380607 is an apocalyptic number.
28994375380607 is a deficient number, since it is larger than the sum of its proper divisors (8266112376193).
28994375380607 is a wasteful number, since it uses less digits than its factorization.
28994375380607 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 151219588 (or 151219574 counting only the distinct ones).
The product of its (nonzero) digits is 548674560, while the sum is 71.
The spelling of 28994375380607 in words is "twenty-eight trillion, nine hundred ninety-four billion, three hundred seventy-five million, three hundred eighty thousand, six hundred seven".
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