Base | Representation |
---|---|
bin | 11000110100010000… |
… | …011000100001000000 |
3 | 2112210001010011000212 |
4 | 120310100120201000 |
5 | 414033001414403 |
6 | 20124035133252 |
7 | 1632216425642 |
oct | 306420304100 |
9 | 75701104025 |
10 | 26646513728 |
11 | 1033429817a |
12 | 51b7a44228 |
13 | 26886a68b3 |
14 | 140ad08892 |
15 | a5e50d4d8 |
hex | 634418840 |
26646513728 has 112 divisors (see below), whose sum is σ = 57275547120. Its totient is φ = 12254183424.
The previous prime is 26646513703. The next prime is 26646513737. The reversal of 26646513728 is 82731564662.
It is a happy number.
It can be written as a sum of positive squares in 8 ways, for example, as 6085248064 + 20561265664 = 78008^2 + 143392^2 .
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8973428 + ... + 8976396.
Almost surely, 226646513728 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 26646513728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28637773560).
26646513728 is an abundant number, since it is smaller than the sum of its proper divisors (30629033392).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
26646513728 is a wasteful number, since it uses less digits than its factorization.
26646513728 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3184 (or 3174 counting only the distinct ones).
The product of its digits is 2903040, while the sum is 50.
The spelling of 26646513728 in words is "twenty-six billion, six hundred forty-six million, five hundred thirteen thousand, seven hundred twenty-eight".
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