| Base | Representation |
|---|---|
| bin | 111011111110110… |
| … | …1001100101110000 |
| 3 | 12012021011012112200 |
| 4 | 1313331221211300 |
| 5 | 13110214243330 |
| 6 | 531414023200 |
| 7 | 100606145535 |
| oct | 16775514560 |
| 9 | 5167135480 |
| 10 | 2012649840 |
| 11 | 9430a7683 |
| 12 | 482047b00 |
| 13 | 260c86086 |
| 14 | 15142cd8c |
| 15 | bba60a60 |
| hex | 77f69970 |
2012649840 has 120 divisors (see below), whose sum is σ = 6772953408. Its totient is φ = 535610880.
The previous prime is 2012649811. The next prime is 2012649869. The reversal of 2012649840 is 489462102.
2012649840 is a `hidden beast` number, since 2 + 0 + 1 + 2 + 649 + 8 + 4 + 0 = 666.
It is an interprime number because it is at equal distance from previous prime (2012649811) and next prime (2012649869).
It is a tau number, because it is divible by the number of its divisors (120).
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a junction number, because it is equal to n+sod(n) for n = 2012649795 and 2012649804.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 386937 + ... + 392103.
Almost surely, 22012649840 is an apocalyptic number.
2012649840 is a gapful number since it is divisible by the number (20) 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 2012649840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3386476704).
2012649840 is an abundant number, since it is smaller than the sum of its proper divisors (4760303568).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2012649840 is a wasteful number, since it uses less digits than its factorization.
2012649840 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5727 (or 5718 counting only the distinct ones).
The product of its (nonzero) digits is 27648, while the sum is 36.
The square root of 2012649840 is about 44862.5661325787. The cubic root of 2012649840 is about 1262.5717691449.
The spelling of 2012649840 in words is "two billion, twelve million, six hundred forty-nine thousand, eight hundred forty".
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