Base | Representation |
---|---|
bin | 111011000101… |
… | …1100001100000 |
3 | 2011021221211112 |
4 | 1312023201200 |
5 | 30412331232 |
6 | 3024002452 |
7 | 524220155 |
oct | 166134140 |
9 | 64257745 |
10 | 30980192 |
11 | 1653a971 |
12 | a460428 |
13 | 6559199 |
14 | 418622c |
15 | 2abe4b2 |
hex | 1d8b860 |
30980192 has 48 divisors (see below), whose sum is σ = 63277200. Its totient is φ = 14922240.
The previous prime is 30980161. The next prime is 30980219. The reversal of 30980192 is 29108903.
It is a Harshad number since it is a multiple of its sum of digits (32).
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115034 + ... + 115302.
It is an arithmetic number, because the mean of its divisors is an integer number (1318275).
Almost surely, 230980192 is an apocalyptic number.
30980192 is a gapful number since it is divisible by the number (32) 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 30980192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31638600).
30980192 is an abundant number, since it is smaller than the sum of its proper divisors (32297008).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30980192 is a wasteful number, since it uses less digits than its factorization.
30980192 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 399 (or 391 counting only the distinct ones).
The product of its (nonzero) digits is 3888, while the sum is 32.
The square root of 30980192 is about 5565.9852676772. The cubic root of 30980192 is about 314.0711429533.
The spelling of 30980192 in words is "thirty million, nine hundred eighty thousand, one hundred ninety-two".
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