| Base | Representation |
|---|---|
| bin | 100100101000101… |
| … | …0110110010000000 |
| 3 | 10011200010020002200 |
| 4 | 1021101112302000 |
| 5 | 10004144132103 |
| 6 | 321551513200 |
| 7 | 42314522511 |
| oct | 11121266200 |
| 9 | 3150106080 |
| 10 | 1229286528 |
| 11 | 58099a188 |
| 12 | 2a3828800 |
| 13 | 1678a97a2 |
| 14 | b9394a08 |
| 15 | 72dc30a3 |
| hex | 49456c80 |
1229286528 has 72 divisors (see below), whose sum is σ = 3540827745. Its totient is φ = 409365504.
The previous prime is 1229286521. The next prime is 1229286533. The reversal of 1229286528 is 8256829221.
It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.
It can be written as a sum of positive squares in 2 ways, for example, as 839145024 + 390141504 = 28968^2 + 19752^2 .
It is a tau number, because it is divible by the number of its divisors (72).
It is an ABA number since it can be written as A⋅BA, here for A=2, B=24792.
It is a super-2 number, since 2×12292865282 = 3022290735844589568, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (1229286521) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1189500 + ... + 1190532.
Almost surely, 21229286528 is an apocalyptic number.
1229286528 is a gapful number since it is divisible by the number (18) 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 1229286528
1229286528 is an abundant number, since it is smaller than the sum of its proper divisors (2311541217).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1229286528 is an frugal number, since it uses more digits than its factorization.
1229286528 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2086 (or 1038 counting only the distinct ones).
The product of its digits is 276480, while the sum is 45.
The square root of 1229286528 is about 35061.1826383538. The cubic root of 1229286528 is about 1071.2340634034.
The spelling of 1229286528 in words is "one billion, two hundred twenty-nine million, two hundred eighty-six thousand, five hundred twenty-eight".
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