Base | Representation |
---|---|
bin | 100100010110111… |
… | …1111000110110000 |
3 | 10011000200011021200 |
4 | 1020231333012300 |
5 | 4444310431022 |
6 | 321021051200 |
7 | 42142644423 |
oct | 11055770660 |
9 | 3130604250 |
10 | 1220014512 |
11 | 576736a62 |
12 | 2a06b6b00 |
13 | 1659b13a2 |
14 | b805d9ba |
15 | 72190bac |
hex | 48b7f1b0 |
1220014512 has 60 divisors (see below), whose sum is σ = 3422001960. Its totient is φ = 405759744.
The previous prime is 1220014487. The next prime is 1220014519. The reversal of 1220014512 is 2154100221.
1220014512 is a `hidden beast` number, since 12 + 200 + 1 + 451 + 2 = 666.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is not an unprimeable number, because it can be changed into a prime (1220014519) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56539 + ... + 75077.
It is an arithmetic number, because the mean of its divisors is an integer number (57033366).
Almost surely, 21220014512 is an apocalyptic number.
1220014512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
1220014512 is an abundant number, since it is smaller than the sum of its proper divisors (2201987448).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1220014512 is a wasteful number, since it uses less digits than its factorization.
1220014512 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 19010 (or 19001 counting only the distinct ones).
The product of its (nonzero) digits is 160, while the sum is 18.
The square root of 1220014512 is about 34928.7061312039. The cubic root of 1220014512 is about 1068.5339668817.
Adding to 1220014512 its reverse (2154100221), we get a palindrome (3374114733).
The spelling of 1220014512 in words is "one billion, two hundred twenty million, fourteen thousand, five hundred twelve".
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