Base | Representation |
---|---|
bin | 111001101011… |
… | …0101100000000 |
3 | 2002220022210001 |
4 | 1303112230000 |
5 | 30220130423 |
6 | 3000045344 |
7 | 515013526 |
oct | 163265400 |
9 | 62808701 |
10 | 30239488 |
11 | 16084414 |
12 | a163854 |
13 | 6359cb6 |
14 | 4032316 |
15 | 29c4cad |
hex | 1cd6b00 |
30239488 has 36 divisors (see below), whose sum is σ = 63547960. Its totient is φ = 14321664.
The previous prime is 30239453. The next prime is 30239491. The reversal of 30239488 is 88493203.
It is a super-5 number, since 5×302394885 (a number of 39 digits) contains 55555 as substring.
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 3 ways as a sum of consecutive naturals, for example, 1756 + ... + 7972.
Almost surely, 230239488 is an apocalyptic number.
30239488 is a gapful number since it is divisible by the number (38) 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 30239488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31773980).
30239488 is an abundant number, since it is smaller than the sum of its proper divisors (33308472).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30239488 is an equidigital number, since it uses as much as digits as its factorization.
30239488 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6252 (or 6238 counting only the distinct ones).
The product of its (nonzero) digits is 41472, while the sum is 37.
The square root of 30239488 is about 5499.0442806000. The cubic root of 30239488 is about 311.5478877963.
The spelling of 30239488 in words is "thirty million, two hundred thirty-nine thousand, four hundred eighty-eight".
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