Base | Representation |
---|---|
bin | 10010101011101100… |
… | …10000101010100011 |
3 | 221220000122001220020 |
4 | 21111312100222203 |
5 | 131020214100422 |
6 | 4335142244523 |
7 | 503362323462 |
oct | 112566205243 |
9 | 27800561806 |
10 | 10030221987 |
11 | 4287887265 |
12 | 1b3b126743 |
13 | c3b03c4c6 |
14 | 6b218c9d9 |
15 | 3da87c95c |
hex | 255d90aa3 |
10030221987 has 8 divisors (see below), whose sum is σ = 13374154320. Its totient is φ = 6686552160.
The previous prime is 10030221937. The next prime is 10030222039. The reversal of 10030221987 is 78912203001.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 10030221987 - 211 = 10030219939 is a prime.
It is not an unprimeable number, because it can be changed into a prime (10030221917) 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, 55437 + ... + 152097.
It is an arithmetic number, because the mean of its divisors is an integer number (1671769290).
Almost surely, 210030221987 is an apocalyptic number.
10030221987 is a deficient number, since it is larger than the sum of its proper divisors (3343932333).
10030221987 is an equidigital number, since it uses as much as digits as its factorization.
10030221987 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 131253.
The product of its (nonzero) digits is 6048, while the sum is 33.
Adding to 10030221987 its reverse (78912203001), we get a palindrome (88942424988).
The spelling of 10030221987 in words is "ten billion, thirty million, two hundred twenty-one thousand, nine hundred eighty-seven".
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