Base | Representation |
---|---|
bin | 111001011010… |
… | …0111110101100 |
3 | 2002122022101102 |
4 | 1302310332230 |
5 | 30201221140 |
6 | 2553102232 |
7 | 513600146 |
oct | 162647654 |
9 | 62568342 |
10 | 30101420 |
11 | 15a9a708 |
12 | a0b7978 |
13 | 630c1bb |
14 | 3dd7c96 |
15 | 2998e15 |
hex | 1cb4fac |
30101420 has 24 divisors (see below), whose sum is σ = 65394000. Its totient is φ = 11625152.
The previous prime is 30101399. The next prime is 30101429. The reversal of 30101420 is 2410103.
It is a happy number.
It is not an unprimeable number, because it can be changed into a prime (30101429) 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, 25370 + ... + 26529.
It is an arithmetic number, because the mean of its divisors is an integer number (2724750).
Almost surely, 230101420 is an apocalyptic number.
It is an amenable number.
30101420 is an abundant number, since it is smaller than the sum of its proper divisors (35292580).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30101420 is a wasteful number, since it uses less digits than its factorization.
30101420 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 51937 (or 51935 counting only the distinct ones).
The product of its (nonzero) digits is 24, while the sum is 11.
The square root of 30101420 is about 5486.4761003763. The cubic root of 30101420 is about 311.0730073326.
Adding to 30101420 its reverse (2410103), we get a palindrome (32511523).
The spelling of 30101420 in words is "thirty million, one hundred one thousand, four hundred twenty".
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