Base | Representation |
---|---|
bin | 111101011001000… |
… | …110010001111100 |
3 | 2122210002212222021 |
4 | 331121012101330 |
5 | 4102134131000 |
6 | 250112125524 |
7 | 34344523561 |
oct | 7531062174 |
9 | 2583085867 |
10 | 1029989500 |
11 | 4894473a1 |
12 | 248b368a4 |
13 | 13550a457 |
14 | 9ab16868 |
15 | 6065711a |
hex | 3d64647c |
1029989500 has 24 divisors (see below), whose sum is σ = 2249498160. Its totient is φ = 411995600.
The previous prime is 1029989497. The next prime is 1029989507. The reversal of 1029989500 is 59899201.
It is a super-2 number, since 2×10299895002 = 2121756740220500000, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1029989507) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1029490 + ... + 1030489.
It is an arithmetic number, because the mean of its divisors is an integer number (93729090).
Almost surely, 21029989500 is an apocalyptic number.
1029989500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
1029989500 is an abundant number, since it is smaller than the sum of its proper divisors (1219508660).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1029989500 is a wasteful number, since it uses less digits than its factorization.
1029989500 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2059998 (or 2059986 counting only the distinct ones).
The product of its (nonzero) digits is 58320, while the sum is 43.
The square root of 1029989500 is about 32093.4494873954. The cubic root of 1029989500 is about 1009.8982023337.
It can be divided in two parts, 10299 and 89500, that added together give a palindrome (99799).
The spelling of 1029989500 in words is "one billion, twenty-nine million, nine hundred eighty-nine thousand, five hundred".
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