Base | Representation |
---|---|
bin | 111010001100… |
… | …1001111110111 |
3 | 2010102011202111 |
4 | 1310121033313 |
5 | 30302341434 |
6 | 3005551451 |
7 | 520230421 |
oct | 164311767 |
9 | 63364674 |
10 | 30512119 |
11 | 16250230 |
12 | a275587 |
13 | 6424111 |
14 | 40a3811 |
15 | 2a2a964 |
hex | 1d193f7 |
30512119 has 8 divisors (see below), whose sum is σ = 35038080. Its totient is φ = 26278200.
The previous prime is 30512113. The next prime is 30512129. The reversal of 30512119 is 91121503.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 30512119 - 219 = 29987831 is a prime.
It is a super-2 number, since 2×305121192 = 1861978811740322, which contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 30512119.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30512113) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72787 + ... + 73204.
It is an arithmetic number, because the mean of its divisors is an integer number (4379760).
Almost surely, 230512119 is an apocalyptic number.
30512119 is a deficient number, since it is larger than the sum of its proper divisors (4525961).
30512119 is a wasteful number, since it uses less digits than its factorization.
30512119 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 146021.
The product of its (nonzero) digits is 270, while the sum is 22.
The square root of 30512119 is about 5523.7776023298. Note that the first 3 decimals coincide. The cubic root of 30512119 is about 312.4813650755.
The spelling of 30512119 in words is "thirty million, five hundred twelve thousand, one hundred nineteen".
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