Base | Representation |
---|---|
bin | 11100001000101111… |
… | …100011100001000010 |
3 | 2212222111011221011100 |
4 | 130020233203201002 |
5 | 443333113030132 |
6 | 21513504155230 |
7 | 2116445062566 |
oct | 341057434102 |
9 | 85874157140 |
10 | 30211455042 |
11 | 118a364036a |
12 | 5a31908b16 |
13 | 2b06130322 |
14 | 166856d6a6 |
15 | bbc49737c |
hex | 708be3842 |
30211455042 has 12 divisors (see below), whose sum is σ = 65458152630. Its totient is φ = 10070485008.
The previous prime is 30211455041. The next prime is 30211455067. The reversal of 30211455042 is 24055411203.
It can be written as a sum of positive squares in only one way, i.e., 20394410481 + 9817044561 = 142809^2 + 99081^2 .
It is a junction number, because it is equal to n+sod(n) for n = 30211454997 and 30211455015.
It is not an unprimeable number, because it can be changed into a prime (30211455041) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 839207067 + ... + 839207102.
Almost surely, 230211455042 is an apocalyptic number.
30211455042 is an abundant number, since it is smaller than the sum of its proper divisors (35246697588).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30211455042 is a wasteful number, since it uses less digits than its factorization.
30211455042 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1678414177 (or 1678414174 counting only the distinct ones).
The product of its (nonzero) digits is 4800, while the sum is 27.
Adding to 30211455042 its reverse (24055411203), we get a palindrome (54266866245).
The spelling of 30211455042 in words is "thirty billion, two hundred eleven million, four hundred fifty-five thousand, forty-two".
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