Base | Representation |
---|---|
bin | 1011010010010100001… |
… | …11111100000001010000 |
3 | 1101001221210112012110012 |
4 | 11221022013330001100 |
5 | 22323143401321342 |
6 | 454052031254052 |
7 | 40005546102500 |
oct | 5511207740120 |
9 | 1331853465405 |
10 | 387790651472 |
11 | 13a508793114 |
12 | 631a637a328 |
13 | 2a750cc8363 |
14 | 14aaa84ba00 |
15 | a149ac3b82 |
hex | 5a4a1fc050 |
387790651472 has 120 divisors (see below), whose sum is σ = 928615609440. Its totient is φ = 155976710400.
The previous prime is 387790651471. The next prime is 387790651487. The reversal of 387790651472 is 274156097783.
It is a happy number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (387790651471) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1472222 + ... + 1715522.
It is an arithmetic number, because the mean of its divisors is an integer number (7738463412).
It is a 1-persistent number, because it is pandigital, but 2⋅387790651472 = 775581302944 is not.
Almost surely, 2387790651472 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 387790651472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (464307804720).
387790651472 is an abundant number, since it is smaller than the sum of its proper divisors (540824957968).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
387790651472 is a wasteful number, since it uses less digits than its factorization.
387790651472 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 243449 (or 243436 counting only the distinct ones).
The product of its (nonzero) digits is 17781120, while the sum is 59.
The spelling of 387790651472 in words is "three hundred eighty-seven billion, seven hundred ninety million, six hundred fifty-one thousand, four hundred seventy-two".
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