Base | Representation |
---|---|
bin | 11011111101010101… |
… | …010101101001100100 |
3 | 2212111010222200122200 |
4 | 123331111111221210 |
5 | 442440112024444 |
6 | 21442505254500 |
7 | 2111632033314 |
oct | 337525255144 |
9 | 85433880580 |
10 | 30020033124 |
11 | 11805587234 |
12 | 5999794430 |
13 | 2aa558a613 |
14 | 164ad81444 |
15 | baa784969 |
hex | 6fd555a64 |
30020033124 has 36 divisors (see below), whose sum is σ = 78500664060. Its totient is φ = 9661619520.
The previous prime is 30020033111. The next prime is 30020033179. The reversal of 30020033124 is 42133002003.
It can be written as a sum of positive squares in 2 ways, for example, as 8317440000 + 21702593124 = 91200^2 + 147318^2 .
It is a tau number, because it is divible by the number of its divisors (36).
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 30020033097 and 30020033106.
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14376367 + ... + 14378454.
Almost surely, 230020033124 is an apocalyptic number.
It is an amenable number.
30020033124 is an abundant number, since it is smaller than the sum of its proper divisors (48480630936).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30020033124 is a wasteful number, since it uses less digits than its factorization.
30020033124 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 28754860 (or 28754855 counting only the distinct ones).
The product of its (nonzero) digits is 432, while the sum is 18.
Adding to 30020033124 its reverse (42133002003), we get a palindrome (72153035127).
The spelling of 30020033124 in words is "thirty billion, twenty million, thirty-three thousand, one hundred twenty-four".
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