Base | Representation |
---|---|
bin | 111001101101… |
… | …0010101011110 |
3 | 2002221002021110 |
4 | 1303122111132 |
5 | 30221120210 |
6 | 3000242450 |
7 | 515105223 |
oct | 163322536 |
9 | 62832243 |
10 | 30254430 |
11 | 16094668 |
12 | a170426 |
13 | 6363a3b |
14 | 403794a |
15 | 29c9420 |
hex | 1cda55e |
30254430 has 64 divisors (see below), whose sum is σ = 76515840. Its totient is φ = 7641216.
The previous prime is 30254429. The next prime is 30254431. The reversal of 30254430 is 3445203.
It is a happy number.
It is an interprime number because it is at equal distance from previous prime (30254429) and next prime (30254431).
It is a junction number, because it is equal to n+sod(n) for n = 30254397 and 30254406.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30254431) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112336 + ... + 112604.
It is an arithmetic number, because the mean of its divisors is an integer number (1195560).
Almost surely, 230254430 is an apocalyptic number.
30254430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.
It is a practical number, because each smaller number is the sum of distinct divisors of 30254430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38257920).
30254430 is an abundant number, since it is smaller than the sum of its proper divisors (46261410).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30254430 is a wasteful number, since it uses less digits than its factorization.
30254430 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 465.
The product of its (nonzero) digits is 1440, while the sum is 21.
The square root of 30254430 is about 5500.4027125293. The cubic root of 30254430 is about 311.5991935813.
Adding to 30254430 its reverse (3445203), we get a palindrome (33699633).
The spelling of 30254430 in words is "thirty million, two hundred fifty-four thousand, four hundred thirty".
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