Base | Representation |
---|---|
bin | 11100001100000000… |
… | …000111010000111101 |
3 | 2220010022001120120021 |
4 | 130030000013100331 |
5 | 443441112034141 |
6 | 21523140052141 |
7 | 2121010560355 |
oct | 341400072075 |
9 | 86108046507 |
10 | 30266127421 |
11 | 11921492552 |
12 | 5a48094051 |
13 | 2b1456334a |
14 | 1671921b65 |
15 | bc21966d1 |
hex | 70c00743d |
30266127421 has 4 divisors (see below), whose sum is σ = 31242454144. Its totient is φ = 29289800700.
The previous prime is 30266127377. The next prime is 30266127457. The reversal of 30266127421 is 12472166203.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12472166203 = 7 ⋅1781738029.
It is a cyclic number.
It is not a de Polignac number, because 30266127421 - 227 = 30131909693 is a prime.
It is a super-2 number, since 2×302661274212 (a number of 22 digits) contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30266127491) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488163315 + ... + 488163376.
It is an arithmetic number, because the mean of its divisors is an integer number (7810613536).
Almost surely, 230266127421 is an apocalyptic number.
30266127421 is a gapful number since it is divisible by the number (31) formed by its first and last digit.
It is an amenable number.
30266127421 is a deficient number, since it is larger than the sum of its proper divisors (976326723).
30266127421 is an equidigital number, since it uses as much as digits as its factorization.
30266127421 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 976326722.
The product of its (nonzero) digits is 24192, while the sum is 34.
The spelling of 30266127421 in words is "thirty billion, two hundred sixty-six million, one hundred twenty-seven thousand, four hundred twenty-one".
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