Base | Representation |
---|---|
bin | 100100001100000… |
… | …0000000000000000 |
3 | 10010121211100020120 |
4 | 1020120000000000 |
5 | 4441322013013 |
6 | 320253340240 |
7 | 42042651255 |
oct | 11030000000 |
9 | 3117740216 |
10 | 1214251008 |
11 | 57345a833 |
12 | 29a797680 |
13 | 164743c29 |
14 | b739d42c |
15 | 71903123 |
hex | 48600000 |
1214251008 has 88 divisors (see below), whose sum is σ = 3254779128. Its totient is φ = 402653184.
The previous prime is 1214250991. The next prime is 1214251009. The reversal of 1214251008 is 8001524121.
It is a Harshad number since it is a multiple of its sum of digits (24).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1214251009) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6291360 + ... + 6291552.
Almost surely, 21214251008 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 1214251008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1627389564).
1214251008 is an abundant number, since it is smaller than the sum of its proper divisors (2040528120).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1214251008 is an frugal number, since it uses more digits than its factorization.
1214251008 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 238 (or 198 counting only the distinct ones).
The product of its (nonzero) digits is 640, while the sum is 24.
The square root of 1214251008 is about 34846.1046316514. The cubic root of 1214251008 is about 1066.8486800510.
Multiplying 1214251008 by its sum of digits (24), we get a palindrome (29142024192).
Adding to 1214251008 its reverse (8001524121), we get a palindrome (9215775129).
The spelling of 1214251008 in words is "one billion, two hundred fourteen million, two hundred fifty-one thousand, eight".
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