Base | Representation |
---|---|
bin | 11100011100011111… |
… | …111111000111000111 |
3 | 2220211120212222222102 |
4 | 130130133333013013 |
5 | 1000022441334322 |
6 | 22010424422315 |
7 | 2130611343263 |
oct | 343437770707 |
9 | 86746788872 |
10 | 30542918087 |
11 | 11a53754470 |
12 | 5b0491799b |
13 | 2b599c5cc6 |
14 | 169a5b30a3 |
15 | bdb61d792 |
hex | 71c7ff1c7 |
30542918087 has 16 divisors (see below), whose sum is σ = 34131469824. Its totient is φ = 27093264000.
The previous prime is 30542918071. The next prime is 30542918093. The reversal of 30542918087 is 78081924503.
It is a happy number.
30542918087 is nontrivially palindromic in base 2.
It is not a de Polignac number, because 30542918087 - 24 = 30542918071 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (47).
It is a Duffinian number.
It is a zygodrome in base 2.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30542918587) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81887 + ... + 260367.
It is an arithmetic number, because the mean of its divisors is an integer number (2133216864).
Almost surely, 230542918087 is an apocalyptic number.
30542918087 is a deficient number, since it is larger than the sum of its proper divisors (3588551737).
30542918087 is a wasteful number, since it uses less digits than its factorization.
30542918087 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 178870.
The product of its (nonzero) digits is 483840, while the sum is 47.
The spelling of 30542918087 in words is "thirty billion, five hundred forty-two million, nine hundred eighteen thousand, eighty-seven".
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