Base | Representation |
---|---|
bin | 111001001110… |
… | …0111100101100 |
3 | 2002110022100210 |
4 | 1302130330230 |
5 | 30140043423 |
6 | 2551022420 |
7 | 513010161 |
oct | 162347454 |
9 | 62408323 |
10 | 30002988 |
11 | 15a32764 |
12 | a06aa10 |
13 | 62a6462 |
14 | 3db0068 |
15 | 2979b93 |
hex | 1c9cf2c |
30002988 has 24 divisors (see below), whose sum is σ = 70561792. Its totient is φ = 9921744.
The previous prime is 30002983. The next prime is 30002989. The reversal of 30002988 is 88920003.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30002983) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8320 + ... + 11367.
Almost surely, 230002988 is an apocalyptic number.
It is an amenable number.
30002988 is an abundant number, since it is smaller than the sum of its proper divisors (40558804).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30002988 is a wasteful number, since it uses less digits than its factorization.
30002988 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 19821 (or 19819 counting only the distinct ones).
The product of its (nonzero) digits is 3456, while the sum is 30.
The square root of 30002988 is about 5477.4983340938. The cubic root of 30002988 is about 310.7335662648.
The spelling of 30002988 in words is "thirty million, two thousand, nine hundred eighty-eight".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.071 sec. • engine limits •