Base | Representation |
---|---|
bin | 111010111001… |
… | …1000110110100 |
3 | 2011002212122101 |
4 | 1311303012310 |
5 | 30401131210 |
6 | 3021511444 |
7 | 523322452 |
oct | 165630664 |
9 | 64085571 |
10 | 30880180 |
11 | 16481811 |
12 | a412584 |
13 | 65227c6 |
14 | 415b9d2 |
15 | 2a9ea3a |
hex | 1d731b4 |
30880180 has 24 divisors (see below), whose sum is σ = 64961568. Its totient is φ = 12330528.
The previous prime is 30880169. The next prime is 30880181. The reversal of 30880180 is 8108803.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30880181) 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, 15607 + ... + 17473.
It is an arithmetic number, because the mean of its divisors is an integer number (2706732).
Almost surely, 230880180 is an apocalyptic number.
It is an amenable number.
30880180 is an abundant number, since it is smaller than the sum of its proper divisors (34081388).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30880180 is a wasteful number, since it uses less digits than its factorization.
30880180 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2703 (or 2701 counting only the distinct ones).
The product of its (nonzero) digits is 1536, while the sum is 28.
The square root of 30880180 is about 5556.9937916107. The cubic root of 30880180 is about 313.7328112359.
Adding to 30880180 its reverse (8108803), we get a palindrome (38988983).
The spelling of 30880180 in words is "thirty million, eight hundred eighty thousand, one hundred eighty".
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