| Base | Representation |
|---|---|
| bin | 110000011011011… |
| … | …100010000100000 |
| 3 | 2002121212021110121 |
| 4 | 300123130100200 |
| 5 | 3131000000000 |
| 6 | 212342410024 |
| 7 | 26064064444 |
| oct | 6033342040 |
| 9 | 2077767417 |
| 10 | 812500000 |
| 11 | 3876a9304 |
| 12 | 1a8130914 |
| 13 | cc43b640 |
| 14 | 79ca0824 |
| 15 | 4b4e5b1a |
| hex | 306dc420 |
812500000 has 120 divisors (see below), whose sum is σ = 2153320092. Its totient is φ = 300000000.
The previous prime is 812499997. The next prime is 812500027. The reversal of 812500000 is 5218.
It is a happy number.
It can be written as a sum of positive squares in 10 ways, for example, as 366952336 + 445547664 = 19156^2 + 21108^2 .
It is a sliding number, since 812500000 = 12500000 + 800000000 and 1/12500000 + 1/800000000 = 0.0000000812500000.
It is a Harshad number since it is a multiple of its sum of digits (16).
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 62499994 + ... + 62500006.
Almost surely, 2812500000 is an apocalyptic number.
812500000 is a gapful number since it is divisible by the number (80) 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 812500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1076660046).
812500000 is an abundant number, since it is smaller than the sum of its proper divisors (1340820092).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
812500000 is an frugal number, since it uses more digits than its factorization.
812500000 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 68 (or 20 counting only the distinct ones).
The product of its (nonzero) digits is 80, while the sum is 16.
The square root of 812500000 is about 28504.3856274784. The cubic root of 812500000 is about 933.1277892043.
Adding to 812500000 its reverse (5218), we get a palindrome (812505218).
It can be divided in two parts, 8 and 12500000, that multiplied together give a 8-th power (100000000 = 108).
The spelling of 812500000 in words is "eight hundred twelve million, five hundred thousand".
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