Base | Representation |
---|---|
bin | 1011000110111101… |
… | …0001110010111100 |
3 | 21200211002022100000 |
4 | 2301233101302330 |
5 | 22101340222032 |
6 | 1211521434300 |
7 | 133616151351 |
oct | 26157216274 |
9 | 7624068300 |
10 | 2981960892 |
11 | 12a026a399 |
12 | 6b279b990 |
13 | 386a39801 |
14 | 20406c628 |
15 | 126bcde7c |
hex | b1bd1cbc |
2981960892 has 36 divisors (see below), whose sum is σ = 7816912376. Its totient is φ = 993986640.
The previous prime is 2981960881. The next prime is 2981960911. The reversal of 2981960892 is 2980691892.
2981960892 is a `hidden beast` number, since 29 + 8 + 1 + 9 + 608 + 9 + 2 = 666.
It is a tau number, because it is divible by the number of its divisors (36).
It is a super-2 number, since 2×29819608922 = 17784181522834871328, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (54).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1532959 + ... + 1534902.
Almost surely, 22981960892 is an apocalyptic number.
It is an amenable number.
2981960892 is an abundant number, since it is smaller than the sum of its proper divisors (4834951484).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2981960892 is a wasteful number, since it uses less digits than its factorization.
2981960892 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3067880 (or 3067866 counting only the distinct ones).
The product of its (nonzero) digits is 1119744, while the sum is 54.
The square root of 2981960892 is about 54607.3336833067. Note that the first 3 decimals coincide. The cubic root of 2981960892 is about 1439.3529905844.
It can be divided in two parts, 298 and 1960892, that added together give a triangular number (1961190 = T1980).
The spelling of 2981960892 in words is "two billion, nine hundred eighty-one million, nine hundred sixty thousand, eight hundred ninety-two".
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