Base | Representation |
---|---|
bin | 11100011110001011… |
… | …101001010101111101 |
3 | 2220220112222211211010 |
4 | 130132023221111331 |
5 | 1000102202443402 |
6 | 22013313345433 |
7 | 2131403256303 |
oct | 343613512575 |
9 | 86815884733 |
10 | 30571140477 |
11 | 11a68680359 |
12 | 5b12268279 |
13 | 2b627c7b47 |
14 | 16a023c273 |
15 | bddd45a6c |
hex | 71e2e957d |
30571140477 has 24 divisors (see below), whose sum is σ = 43320882976. Its totient is φ = 19172775168.
The previous prime is 30571140421. The next prime is 30571140487. The reversal of 30571140477 is 77404117503.
It is not a de Polignac number, because 30571140477 - 218 = 30570878333 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30571140487) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2131743 + ... + 2146035.
Almost surely, 230571140477 is an apocalyptic number.
It is an amenable number.
30571140477 is a deficient number, since it is larger than the sum of its proper divisors (12749742499).
30571140477 is a wasteful number, since it uses less digits than its factorization.
30571140477 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 16797 (or 16780 counting only the distinct ones).
The product of its (nonzero) digits is 82320, while the sum is 39.
The spelling of 30571140477 in words is "thirty billion, five hundred seventy-one million, one hundred forty thousand, four hundred seventy-seven".
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