| Base | Representation |
|---|---|
| bin | 111001110011… |
| … | …0001101100000 |
| 3 | 2010000120000000 |
| 4 | 1303212031200 |
| 5 | 30224144242 |
| 6 | 3001300000 |
| 7 | 515400102 |
| oct | 163461540 |
| 9 | 63016000 |
| 10 | 30303072 |
| 11 | 16118168 |
| 12 | a194600 |
| 13 | 637cc17 |
| 14 | 404b572 |
| 15 | 29d8a4c |
| hex | 1ce6360 |
30303072 has 96 divisors (see below), whose sum is σ = 89681760. Its totient is φ = 10077696.
The previous prime is 30303071. The next prime is 30303073. The reversal of 30303072 is 27030303.
It is an interprime number because it is at equal distance from previous prime (30303071) and next prime (30303073).
It is a tau number, because it is divible by the number of its divisors (96).
It is a Harshad number since it is a multiple of its sum of digits (18).
It is an alternating number because its digits alternate between odd and even.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30303071) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69768 + ... + 70200.
It is an arithmetic number, because the mean of its divisors is an integer number (934185).
Almost surely, 230303072 is an apocalyptic number.
30303072 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 30303072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44840880).
30303072 is an abundant number, since it is smaller than the sum of its proper divisors (59378688).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30303072 is an frugal number, since it uses more digits than its factorization.
30303072 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 464 (or 438 counting only the distinct ones).
The product of its (nonzero) digits is 378, while the sum is 18.
The square root of 30303072 is about 5504.8226129459. The cubic root of 30303072 is about 311.7660968785.
Adding to 30303072 its reverse (27030303), we get a palindrome (57333375).
The spelling of 30303072 in words is "thirty million, three hundred three thousand, seventy-two".
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