Base | Representation |
---|---|
bin | 1111010111010… |
… | …01101100101010 |
3 | 22222111221220220 |
4 | 13223221230222 |
5 | 230443232443 |
6 | 20442230510 |
7 | 3123330432 |
oct | 753515452 |
9 | 288457826 |
10 | 128883498 |
11 | 6682a097 |
12 | 371b5436 |
13 | 20917533 |
14 | 1318d2c2 |
15 | b4aca83 |
hex | 7ae9b2a |
128883498 has 48 divisors (see below), whose sum is σ = 274502880. Its totient is φ = 40334112.
The previous prime is 128883497. The next prime is 128883499. The reversal of 128883498 is 894388821.
It is a happy number.
It is an interprime number because it is at equal distance from previous prime (128883497) and next prime (128883499).
It is a super-4 number, since 4×1288834984 (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.
It is a self number, because there is not a number n which added to its sum of digits gives 128883498.
It is not an unprimeable number, because it can be changed into a prime (128883497) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 339873 + ... + 340251.
It is an arithmetic number, because the mean of its divisors is an integer number (5718810).
Almost surely, 2128883498 is an apocalyptic number.
128883498 is an abundant number, since it is smaller than the sum of its proper divisors (145619382).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
128883498 is a wasteful number, since it uses less digits than its factorization.
128883498 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 579 (or 560 counting only the distinct ones).
The product of its digits is 884736, while the sum is 51.
The square root of 128883498 is about 11352.6868185465. The cubic root of 128883498 is about 505.1252808152.
The spelling of 128883498 in words is "one hundred twenty-eight million, eight hundred eighty-three thousand, four hundred ninety-eight".
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