Base | Representation |
---|---|
bin | 111001010000… |
… | …1110101011000 |
3 | 2002111022210222 |
4 | 1302201311120 |
5 | 30141214000 |
6 | 2551255212 |
7 | 513122420 |
oct | 162416530 |
9 | 62438728 |
10 | 30023000 |
11 | 15a467a7 |
12 | a07a508 |
13 | 62b25b7 |
14 | 3db7480 |
15 | 2980a85 |
hex | 1ca1d58 |
30023000 has 64 divisors (see below), whose sum is σ = 80308800. Its totient is φ = 10291200.
The previous prime is 30022999. The next prime is 30023017. The reversal of 30023000 is 32003.
It is a Harshad number since it is a multiple of its sum of digits (8).
It is a congruent number.
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, 4856 + ... + 9144.
It is an arithmetic number, because the mean of its divisors is an integer number (1254825).
Almost surely, 230023000 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 30023000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40154400).
30023000 is an abundant number, since it is smaller than the sum of its proper divisors (50285800).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30023000 is a wasteful number, since it uses less digits than its factorization.
30023000 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4317 (or 4303 counting only the distinct ones).
The product of its (nonzero) digits is 18, while the sum is 8.
The square root of 30023000 is about 5479.3247759190. The cubic root of 30023000 is about 310.8026373640.
Adding to 30023000 its reverse (32003), we get a palindrome (30055003).
The spelling of 30023000 in words is "thirty million, twenty-three thousand".
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