Base | Representation |
---|---|
bin | 1110010101111010… |
… | …11110011100100101 |
3 | 201212122001121120202 |
4 | 13022331132130211 |
5 | 111232210033141 |
6 | 3312023240245 |
7 | 361546414025 |
oct | 71275363445 |
9 | 21778047522 |
10 | 7700080421 |
11 | 32a1549430 |
12 | 15aa8a9085 |
13 | 959372b07 |
14 | 530915a85 |
15 | 30100549b |
hex | 1caf5e725 |
7700080421 has 16 divisors (see below), whose sum is σ = 8678270976. Its totient is φ = 6768630000.
The previous prime is 7700080357. The next prime is 7700080441. The reversal of 7700080421 is 1240800077.
It is not a de Polignac number, because 7700080421 - 26 = 7700080357 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (7700080441) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 431486 + ... + 448976.
It is an arithmetic number, because the mean of its divisors is an integer number (542391936).
Almost surely, 27700080421 is an apocalyptic number.
It is an amenable number.
7700080421 is a deficient number, since it is larger than the sum of its proper divisors (978190555).
7700080421 is a wasteful number, since it uses less digits than its factorization.
7700080421 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 18824.
The product of its (nonzero) digits is 3136, while the sum is 29.
The square root of 7700080421 is about 87750.1021139007. The cubic root of 7700080421 is about 1974.6876968987.
Adding to 7700080421 its reverse (1240800077), we get a palindrome (8940880498).
The spelling of 7700080421 in words is "seven billion, seven hundred million, eighty thousand, four hundred twenty-one".
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