Base | Representation |
---|---|
bin | 10000111001011001… |
… | …111010001111110000 |
3 | 1201211102011222221110 |
4 | 100321121322033300 |
5 | 244124044301142 |
6 | 12200150353320 |
7 | 1211412431622 |
oct | 207131721760 |
9 | 51742158843 |
10 | 18142962672 |
11 | 777025842a |
12 | 362405b840 |
13 | 1931a37293 |
14 | c41802c12 |
15 | 712be799c |
hex | 43967a3f0 |
18142962672 has 80 divisors (see below), whose sum is σ = 48941867520. Its totient is φ = 5780603136.
The previous prime is 18142962659. The next prime is 18142962679. The reversal of 18142962672 is 27626924181.
It is a Harshad number since it is a multiple of its sum of digits (48).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (18142962679) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1802229 + ... + 1812267.
It is an arithmetic number, because the mean of its divisors is an integer number (611773344).
Almost surely, 218142962672 is an apocalyptic number.
18142962672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 18142962672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24470933760).
18142962672 is an abundant number, since it is smaller than the sum of its proper divisors (30798904848).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18142962672 is a wasteful number, since it uses less digits than its factorization.
18142962672 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 11710 (or 11704 counting only the distinct ones).
The product of its digits is 580608, while the sum is 48.
The spelling of 18142962672 in words is "eighteen billion, one hundred forty-two million, nine hundred sixty-two thousand, six hundred seventy-two".
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