Base | Representation |
---|---|
bin | 111001101000… |
… | …0100101101101 |
3 | 2002212001111220 |
4 | 1303100211231 |
5 | 30213331014 |
6 | 2555333553 |
7 | 514550643 |
oct | 163204555 |
9 | 62761456 |
10 | 30214509 |
11 | 16067676 |
12 | a1512b9 |
13 | 634b810 |
14 | 4027193 |
15 | 29bc6a9 |
hex | 1cd096d |
30214509 has 24 divisors (see below), whose sum is σ = 44523360. Its totient is φ = 18117792.
The previous prime is 30214507. The next prime is 30214519. The reversal of 30214509 is 90541203.
It is not a de Polignac number, because 30214509 - 21 = 30214507 is a prime.
It is a super-2 number, since 2×302145092 = 1825833108222162, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30214501) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71902 + ... + 72320.
It is an arithmetic number, because the mean of its divisors is an integer number (1855140).
Almost surely, 230214509 is an apocalyptic number.
30214509 is a gapful number since it is divisible by the number (39) formed by its first and last digit.
It is an amenable number.
30214509 is a deficient number, since it is larger than the sum of its proper divisors (14308851).
30214509 is a wasteful number, since it uses less digits than its factorization.
30214509 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 521 (or 478 counting only the distinct ones).
The product of its (nonzero) digits is 1080, while the sum is 24.
The square root of 30214509 is about 5496.7725985345. The cubic root of 30214509 is about 311.4620805844.
The spelling of 30214509 in words is "thirty million, two hundred fourteen thousand, five hundred nine".
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