Base | Representation |
---|---|
bin | 111011001111111… |
… | …0100010001110000 |
3 | 12010112212111202112 |
4 | 1312133310101300 |
5 | 13032420131310 |
6 | 525134504452 |
7 | 100160110130 |
oct | 16637642160 |
9 | 5115774675 |
10 | 1988052080 |
11 | 930226a53 |
12 | 475965128 |
13 | 258b52ca1 |
14 | 14c068ac0 |
15 | b9802705 |
hex | 767f4470 |
1988052080 has 320 divisors, whose sum is σ = 6106752000. Its totient is φ = 585252864.
The previous prime is 1988052071. The next prime is 1988052083. The reversal of 1988052080 is 802508891.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1988052083) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5245331 + ... + 5245709.
It is an arithmetic number, because the mean of its divisors is an integer number (19083600).
Almost surely, 21988052080 is an apocalyptic number.
1988052080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1988052080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3053376000).
1988052080 is an abundant number, since it is smaller than the sum of its proper divisors (4118699920).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1988052080 is a wasteful number, since it uses less digits than its factorization.
1988052080 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 464 (or 458 counting only the distinct ones).
The product of its (nonzero) digits is 46080, while the sum is 41.
The square root of 1988052080 is about 44587.5776422088. The cubic root of 1988052080 is about 1257.4071312276.
The spelling of 1988052080 in words is "one billion, nine hundred eighty-eight million, fifty-two thousand, eighty".
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