Base | Representation |
---|---|
bin | 110010011110010011… |
… | …0001101010011100010 |
3 | 101100202221110201221110 |
4 | 1210330212031103202 |
5 | 3233441023100310 |
6 | 121443303404150 |
7 | 10555011602415 |
oct | 1447446152342 |
9 | 340687421843 |
10 | 108390831330 |
11 | 41a71886951 |
12 | 1900ba53656 |
13 | a2b5003ab2 |
14 | 53635c3b7c |
15 | 2c45bd6d20 |
hex | 193c98d4e2 |
108390831330 has 64 divisors (see below), whose sum is σ = 268705382400. Its totient is φ = 27953511360.
The previous prime is 108390831271. The next prime is 108390831331. The reversal of 108390831330 is 33138093801.
It is not an unprimeable number, because it can be changed into a prime (108390831331) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1412491 + ... + 1487249.
It is an arithmetic number, because the mean of its divisors is an integer number (4198521600).
Almost surely, 2108390831330 is an apocalyptic number.
108390831330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is a practical number, because each smaller number is the sum of distinct divisors of 108390831330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134352691200).
108390831330 is an abundant number, since it is smaller than the sum of its proper divisors (160314551070).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
108390831330 is a wasteful number, since it uses less digits than its factorization.
108390831330 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 76359.
The product of its (nonzero) digits is 46656, while the sum is 39.
The spelling of 108390831330 in words is "one hundred eight billion, three hundred ninety million, eight hundred thirty-one thousand, three hundred thirty".
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