Base | Representation |
---|---|
bin | 111010101111… |
… | …1111000010110 |
3 | 2010221212121201 |
4 | 1311133320112 |
5 | 30341121210 |
6 | 3020103114 |
7 | 522544042 |
oct | 165377026 |
9 | 63855551 |
10 | 30801430 |
11 | 16428630 |
12 | a394a9a |
13 | 64c59ca |
14 | 413b022 |
15 | 2a8653a |
hex | 1d5fe16 |
30801430 has 16 divisors (see below), whose sum is σ = 60483024. Its totient is φ = 11200480.
The previous prime is 30801371. The next prime is 30801443. The reversal of 30801430 is 3410803.
It is a junction number, because it is equal to n+sod(n) for n = 30801398 and 30801407.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139897 + ... + 140116.
It is an arithmetic number, because the mean of its divisors is an integer number (3780189).
Almost surely, 230801430 is an apocalyptic number.
30801430 is a deficient number, since it is larger than the sum of its proper divisors (29681594).
30801430 is a wasteful number, since it uses less digits than its factorization.
30801430 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 280031.
The product of its (nonzero) digits is 288, while the sum is 19.
The square root of 30801430 is about 5549.9036027664. The cubic root of 30801430 is about 313.4658925558.
The spelling of 30801430 in words is "thirty million, eight hundred one thousand, four hundred thirty".
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