Base | Representation |
---|---|
bin | 111001011000… |
… | …0000111000010 |
3 | 2002121022000200 |
4 | 1302300013002 |
5 | 30200101344 |
6 | 2552430030 |
7 | 513455043 |
oct | 162600702 |
9 | 62538020 |
10 | 30081474 |
11 | 15a86725 |
12 | a0a8316 |
13 | 63030b7 |
14 | 3dd08ca |
15 | 2993069 |
hex | 1cb01c2 |
30081474 has 24 divisors (see below), whose sum is σ = 65694720. Its totient is φ = 9947448.
The previous prime is 30081451. The next prime is 30081509. The reversal of 30081474 is 47418003.
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4294 + ... + 8865.
It is an arithmetic number, because the mean of its divisors is an integer number (2737280).
Almost surely, 230081474 is an apocalyptic number.
30081474 is an abundant number, since it is smaller than the sum of its proper divisors (35613246).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30081474 is a wasteful number, since it uses less digits than its factorization.
30081474 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 13294 (or 13291 counting only the distinct ones).
The product of its (nonzero) digits is 2688, while the sum is 27.
The square root of 30081474 is about 5484.6580567981. The cubic root of 30081474 is about 311.0042837401.
Adding to 30081474 its reverse (47418003), we get a palindrome (77499477).
The spelling of 30081474 in words is "thirty million, eighty-one thousand, four hundred seventy-four".
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