Base | Representation |
---|---|
bin | 111010011110… |
… | …0001000000100 |
3 | 2010200102201122 |
4 | 1310330020010 |
5 | 30321424410 |
6 | 3013013112 |
7 | 521364056 |
oct | 164741004 |
9 | 63612648 |
10 | 30654980 |
11 | 163385a4 |
12 | a324198 |
13 | 6474155 |
14 | 40dd8d6 |
15 | 2a57e55 |
hex | 1d3c204 |
30654980 has 24 divisors (see below), whose sum is σ = 67764480. Its totient is φ = 11616480.
The previous prime is 30654977. The next prime is 30654997. The reversal of 30654980 is 8945603.
It is a self number, because there is not a number n which added to its sum of digits gives 30654980.
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, 39956 + ... + 40715.
It is an arithmetic number, because the mean of its divisors is an integer number (2823520).
Almost surely, 230654980 is an apocalyptic number.
It is an amenable number.
30654980 is an abundant number, since it is smaller than the sum of its proper divisors (37109500).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30654980 is a wasteful number, since it uses less digits than its factorization.
30654980 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 80699 (or 80697 counting only the distinct ones).
The product of its (nonzero) digits is 25920, while the sum is 35.
The square root of 30654980 is about 5536.6939593949. The cubic root of 30654980 is about 312.9682962849.
The spelling of 30654980 in words is "thirty million, six hundred fifty-four thousand, nine hundred eighty".
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