Base | Representation |
---|---|
bin | 111111111100011… |
… | …100000011010101 |
3 | 2202202200022010011 |
4 | 333330130003111 |
5 | 4144114330044 |
6 | 254242000221 |
7 | 35404501360 |
oct | 7774340325 |
9 | 2682608104 |
10 | 1072808149 |
11 | 500632706 |
12 | 25b346071 |
13 | 14134cc2a |
14 | a26a10d7 |
15 | 642b4134 |
hex | 3ff1c0d5 |
1072808149 has 8 divisors (see below), whose sum is σ = 1226393408. Its totient is φ = 919304640.
The previous prime is 1072808147. The next prime is 1072808183. The reversal of 1072808149 is 9418082701.
It is a happy number.
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 1072808149 - 21 = 1072808147 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1072808141) 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, 10894 + ... + 47584.
It is an arithmetic number, because the mean of its divisors is an integer number (153299176).
Almost surely, 21072808149 is an apocalyptic number.
It is an amenable number.
1072808149 is a deficient number, since it is larger than the sum of its proper divisors (153585259).
1072808149 is an equidigital number, since it uses as much as digits as its factorization.
1072808149 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 40875.
The product of its (nonzero) digits is 32256, while the sum is 40.
The square root of 1072808149 is about 32753.7501517002. The cubic root of 1072808149 is about 1023.7031066394.
The spelling of 1072808149 in words is "one billion, seventy-two million, eight hundred eight thousand, one hundred forty-nine".
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