| Base | Representation |
|---|---|
| bin | 100000001110010… |
| … | …0101110000001100 |
| 3 | 2210100112111122000 |
| 4 | 1000130211300030 |
| 5 | 4203244031432 |
| 6 | 255142352300 |
| 7 | 35536233660 |
| oct | 10034456014 |
| 9 | 2710474560 |
| 10 | 1081236492 |
| 11 | 505369a86 |
| 12 | 26212b690 |
| 13 | 14301130b |
| 14 | a38568a0 |
| 15 | 64dcb57c |
| hex | 40725c0c |
1081236492 has 96 divisors (see below), whose sum is σ = 3211622400. Its totient is φ = 308157696.
The previous prime is 1081236491. The next prime is 1081236521. The reversal of 1081236492 is 2946321801.
1081236492 is a `hidden beast` number, since 1 + 0 + 8 + 1 + 2 + 3 + 649 + 2 = 666.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is not an unprimeable number, because it can be changed into a prime (1081236491) 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 31 ways as a sum of consecutive naturals, for example, 348484 + ... + 351572.
It is an arithmetic number, because the mean of its divisors is an integer number (33454400).
Almost surely, 21081236492 is an apocalyptic number.
1081236492 is a gapful number since it is divisible by the number (12) 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 1081236492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1605811200).
1081236492 is an abundant number, since it is smaller than the sum of its proper divisors (2130385908).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1081236492 is a wasteful number, since it uses less digits than its factorization.
1081236492 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3572 (or 3564 counting only the distinct ones).
The product of its (nonzero) digits is 20736, while the sum is 36.
The square root of 1081236492 is about 32882.1606954288. The cubic root of 1081236492 is about 1026.3769689646.
It can be divided in two parts, 108 and 1236492, that multiplied together give a square (133541136 = 115562).
The spelling of 1081236492 in words is "one billion, eighty-one million, two hundred thirty-six thousand, four hundred ninety-two".
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