Base | Representation |
---|---|
bin | 1011000110110100… |
… | …0001100011011000 |
3 | 21200202222021212210 |
4 | 2301231001203120 |
5 | 22101212320242 |
6 | 1211501035120 |
7 | 133611141012 |
oct | 26155014330 |
9 | 7622867783 |
10 | 2981370072 |
11 | 129a9a650a |
12 | 6b2555aa0 |
13 | 386890905 |
14 | 203d571b2 |
15 | 126b13d9c |
hex | b1b418d8 |
2981370072 has 32 divisors (see below), whose sum is σ = 7477256880. Its totient is φ = 990612480.
The previous prime is 2981370023. The next prime is 2981370083. The reversal of 2981370072 is 2700731892.
It is a self number, because there is not a number n which added to its sum of digits gives 2981370072.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190929 + ... + 205952.
Almost surely, 22981370072 is an apocalyptic number.
It is an amenable number.
2981370072 is an abundant number, since it is smaller than the sum of its proper divisors (4495886808).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2981370072 is a wasteful number, since it uses less digits than its factorization.
2981370072 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 397203 (or 397199 counting only the distinct ones).
The product of its (nonzero) digits is 42336, while the sum is 39.
The square root of 2981370072 is about 54601.9237023752. The cubic root of 2981370072 is about 1439.2579239784.
The spelling of 2981370072 in words is "two billion, nine hundred eighty-one million, three hundred seventy thousand, seventy-two".
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