Base | Representation |
---|---|
bin | 11100101100110001… |
… | …110100100010000000 |
3 | 2221112121210110110000 |
4 | 130230301310202000 |
5 | 1001102400410200 |
6 | 22053502240000 |
7 | 2140435631364 |
oct | 345461644200 |
9 | 87477713400 |
10 | 30816028800 |
11 | 120839325a7 |
12 | 5b80286000 |
13 | 2ba146a98b |
14 | 16c49872a4 |
15 | c055ba300 |
hex | 72cc74880 |
30816028800 has 480 divisors, whose sum is σ = 115641454500. Its totient is φ = 8078745600.
The previous prime is 30816028759. The next prime is 30816028853. The reversal of 30816028800 is 882061803.
It can be written as a sum of positive squares in 6 ways, for example, as 7230441024 + 23585587776 = 85032^2 + 153576^2 .
It is a tau number, because it is divible by the number of its divisors (480).
It is a Harshad number since it is a multiple of its sum of digits (36).
It is an unprimeable number.
It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 15810226 + ... + 15812174.
Almost surely, 230816028800 is an apocalyptic number.
30816028800 is a gapful number since it is divisible by the number (30) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 30816028800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57820727250).
30816028800 is an abundant number, since it is smaller than the sum of its proper divisors (84825425700).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30816028800 is a wasteful number, since it uses less digits than its factorization.
30816028800 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2046 (or 2020 counting only the distinct ones).
The product of its (nonzero) digits is 18432, while the sum is 36.
The spelling of 30816028800 in words is "thirty billion, eight hundred sixteen million, twenty-eight thousand, eight hundred".
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