Base | Representation |
---|---|
bin | 111010100000… |
… | …1110101111011 |
3 | 2010201121211212 |
4 | 1311001311323 |
5 | 30323202040 |
6 | 3013313335 |
7 | 521522246 |
oct | 165016573 |
9 | 63647755 |
10 | 30678395 |
11 | 16354150 |
12 | a33584b |
13 | 64819c7 |
14 | 410825d |
15 | 2a5ed65 |
hex | 1d41d7b |
30678395 has 8 divisors (see below), whose sum is σ = 40160880. Its totient is φ = 22311520.
The previous prime is 30678383. The next prime is 30678397. The reversal of 30678395 is 59387603.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 30678395 - 24 = 30678379 is a prime.
It is not an unprimeable number, because it can be changed into a prime (30678397) 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, 278840 + ... + 278949.
It is an arithmetic number, because the mean of its divisors is an integer number (5020110).
Almost surely, 230678395 is an apocalyptic number.
30678395 is a deficient number, since it is larger than the sum of its proper divisors (9482485).
30678395 is a wasteful number, since it uses less digits than its factorization.
30678395 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 557805.
The product of its (nonzero) digits is 136080, while the sum is 41.
The square root of 30678395 is about 5538.8080847778. The cubic root of 30678395 is about 313.0479602052.
The spelling of 30678395 in words is "thirty million, six hundred seventy-eight thousand, three hundred ninety-five".
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