Base | Representation |
---|---|
bin | 11100010010000101… |
… | …011000101001001100 |
3 | 2220101102002000021002 |
4 | 130102011120221030 |
5 | 444143223010440 |
6 | 21541223155432 |
7 | 2123360131262 |
oct | 342205305114 |
9 | 86342060232 |
10 | 30368172620 |
11 | 11974050625 |
12 | 5a762a5b78 |
13 | 2b2c741a16 |
14 | 16812c6432 |
15 | bcb102115 |
hex | 712158a4c |
30368172620 has 24 divisors (see below), whose sum is σ = 63793281888. Its totient is φ = 12143436800.
The previous prime is 30368172619. The next prime is 30368172629. The reversal of 30368172620 is 2627186303.
It is not an unprimeable number, because it can be changed into a prime (30368172629) 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, 174101 + ... + 301740.
It is an arithmetic number, because the mean of its divisors is an integer number (2658053412).
Almost surely, 230368172620 is an apocalyptic number.
It is an amenable number.
30368172620 is an abundant number, since it is smaller than the sum of its proper divisors (33425109268).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30368172620 is a wasteful number, since it uses less digits than its factorization.
30368172620 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 479041 (or 479039 counting only the distinct ones).
The product of its (nonzero) digits is 72576, while the sum is 38.
The spelling of 30368172620 in words is "thirty billion, three hundred sixty-eight million, one hundred seventy-two thousand, six hundred twenty".
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