Base | Representation |
---|---|
bin | 1100111001010… |
… | …0110101101010 |
3 | 10202202220102220 |
4 | 3032110311222 |
5 | 102321241033 |
6 | 5211134510 |
7 | 1224506046 |
oct | 316246552 |
9 | 122686386 |
10 | 54087018 |
11 | 28592417 |
12 | 16144436 |
13 | b28976b |
14 | 727d026 |
15 | 4b35bb3 |
hex | 3394d6a |
54087018 has 16 divisors (see below), whose sum is σ = 109001376. Its totient is φ = 17891120.
The previous prime is 54087017. The next prime is 54087029. The reversal of 54087018 is 81078045.
It is a happy number.
It is a super-2 number, since 2×540870182 = 5850811032264648, which contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 54087018.
It is not an unprimeable number, because it can be changed into a prime (54087017) 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, 33621 + ... + 35192.
It is an arithmetic number, because the mean of its divisors is an integer number (6812586).
Almost surely, 254087018 is an apocalyptic number.
54087018 is an abundant number, since it is smaller than the sum of its proper divisors (54914358).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
54087018 is a wasteful number, since it uses less digits than its factorization.
54087018 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 68949.
The product of its (nonzero) digits is 8960, while the sum is 33.
The square root of 54087018 is about 7354.3876699559. The cubic root of 54087018 is about 378.1792352868.
The spelling of 54087018 in words is "fifty-four million, eighty-seven thousand, eighteen".
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