Base | Representation |
---|---|
bin | 11110100011001… |
… | …100000010001100 |
3 | 1022201102202211001 |
4 | 132203030002030 |
5 | 2022202301222 |
6 | 122505310044 |
7 | 15462345040 |
oct | 3643140214 |
9 | 1281382731 |
10 | 512540812 |
11 | 243352553 |
12 | 123795324 |
13 | 822562b4 |
14 | 4c0dc020 |
15 | 2eee3e27 |
hex | 1e8cc08c |
512540812 has 12 divisors (see below), whose sum is σ = 1025081680. Its totient is φ = 219660336.
The previous prime is 512540797. The next prime is 512540813. The reversal of 512540812 is 218045215.
512540812 is an admirable number.
It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 18305029 = 512540812 / (5 + 1 + 2 + 5 + 4 + 0 + 8 + 1 + 2).
It is not an unprimeable number, because it can be changed into a prime (512540813) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9152487 + ... + 9152542.
Almost surely, 2512540812 is an apocalyptic number.
It is an amenable number.
512540812 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
512540812 is a wasteful number, since it uses less digits than its factorization.
512540812 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 18305040 (or 18305038 counting only the distinct ones).
The product of its (nonzero) digits is 3200, while the sum is 28.
The square root of 512540812 is about 22639.3642136876. The cubic root of 512540812 is about 800.2815738003.
The spelling of 512540812 in words is "five hundred twelve million, five hundred forty thousand, eight hundred twelve".
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