Base | Representation |
---|---|
bin | 101010111010110… |
… | …1010010010100101 |
3 | 10201100212012021001 |
4 | 1111311222102211 |
5 | 10422133131323 |
6 | 354522553301 |
7 | 50454622234 |
oct | 12565522245 |
9 | 3640765231 |
10 | 1440130213 |
11 | 679a09165 |
12 | 342368831 |
13 | 19c48c672 |
14 | d939ab1b |
15 | 866703ad |
hex | 55d6a4a5 |
1440130213 has 8 divisors (see below), whose sum is σ = 1518304320. Its totient is φ = 1362193920.
The previous prime is 1440130199. The next prime is 1440130229. The reversal of 1440130213 is 3120310441.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 1440130213 - 29 = 1440129701 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (19).
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1440130253) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46945 + ... + 71302.
It is an arithmetic number, because the mean of its divisors is an integer number (189788040).
Almost surely, 21440130213 is an apocalyptic number.
It is an amenable number.
1440130213 is a deficient number, since it is larger than the sum of its proper divisors (78174107).
1440130213 is a wasteful number, since it uses less digits than its factorization.
1440130213 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 118907.
The product of its (nonzero) digits is 288, while the sum is 19.
The square root of 1440130213 is about 37949.0475901570. The cubic root of 1440130213 is about 1129.2772711659.
Adding to 1440130213 its reverse (3120310441), we get a palindrome (4560440654).
The spelling of 1440130213 in words is "one billion, four hundred forty million, one hundred thirty thousand, two hundred thirteen".
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