Base | Representation |
---|---|
bin | 111101010001100… |
… | …011111011110010 |
3 | 2122122101111211120 |
4 | 331101203323302 |
5 | 4101132420220 |
6 | 250001523110 |
7 | 34321654545 |
oct | 7521437362 |
9 | 2578344746 |
10 | 1028013810 |
11 | 488317a9a |
12 | 248343496 |
13 | 134c980c5 |
14 | 9a76085c |
15 | 603b6a40 |
hex | 3d463ef2 |
1028013810 has 32 divisors (see below), whose sum is σ = 2597088960. Its totient is φ = 259708608.
The previous prime is 1028013797. The next prime is 1028013821. The reversal of 1028013810 is 183108201.
It is a super-2 number, since 2×10280138102 = 2113624787101432200, which contains 22 as substring.
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, 901197 + ... + 902336.
It is an arithmetic number, because the mean of its divisors is an integer number (81159030).
Almost surely, 21028013810 is an apocalyptic number.
1028013810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
1028013810 is an abundant number, since it is smaller than the sum of its proper divisors (1569075150).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1028013810 is a wasteful number, since it uses less digits than its factorization.
1028013810 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1803562.
The product of its (nonzero) digits is 384, while the sum is 24.
The square root of 1028013810 is about 32062.6544440725. The cubic root of 1028013810 is about 1009.2520718383.
It can be divided in two parts, 10280 and 13810, that added together give a triangular number (24090 = T219).
The spelling of 1028013810 in words is "one billion, twenty-eight million, thirteen thousand, eight hundred ten".
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