Base | Representation |
---|---|
bin | 111110111100101… |
… | …110001110111101 |
3 | 2201121020201021000 |
4 | 332330232032331 |
5 | 4130330333110 |
6 | 252444000513 |
7 | 35112514335 |
oct | 7674561675 |
9 | 2647221230 |
10 | 1056105405 |
11 | 4a2164693 |
12 | 255830139 |
13 | 13aa52554 |
14 | a03940c5 |
15 | 62ab51c0 |
hex | 3ef2e3bd |
1056105405 has 32 divisors (see below), whose sum is σ = 1976342400. Its totient is φ = 533609856.
The previous prime is 1056105403. The next prime is 1056105437. The reversal of 1056105405 is 5045016501.
It is a happy number.
1056105405 is a `hidden beast` number, since 1 + 0 + 5 + 610 + 5 + 40 + 5 = 666.
It is not a de Polignac number, because 1056105405 - 21 = 1056105403 is a prime.
It is a super-2 number, since 2×10561054052 = 2230717252940428050, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1056105403) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 203304 + ... + 208433.
It is an arithmetic number, because the mean of its divisors is an integer number (61760700).
Almost surely, 21056105405 is an apocalyptic number.
1056105405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
1056105405 is a deficient number, since it is larger than the sum of its proper divisors (920236995).
1056105405 is a wasteful number, since it uses less digits than its factorization.
1056105405 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 411770 (or 411764 counting only the distinct ones).
The product of its (nonzero) digits is 3000, while the sum is 27.
The square root of 1056105405 is about 32497.7753854014. The cubic root of 1056105405 is about 1018.3625544126.
The spelling of 1056105405 in words is "one billion, fifty-six million, one hundred five thousand, four hundred five".
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