Base | Representation |
---|---|
bin | 11100011010101010… |
… | …001001000001000011 |
3 | 2220202102202111112201 |
4 | 130122222021001003 |
5 | 444442034310132 |
6 | 22003402334031 |
7 | 2130054640024 |
oct | 343252110103 |
9 | 86672674481 |
10 | 30512025667 |
11 | 11a38274542 |
12 | 5ab64ba317 |
13 | 2b5349aa76 |
14 | 1696450c4b |
15 | bd8a6a2e7 |
hex | 71aa89043 |
30512025667 has 8 divisors (see below), whose sum is σ = 30909501440. Its totient is φ = 30114831240.
The previous prime is 30512025623. The next prime is 30512025671. The reversal of 30512025667 is 76652021503.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 30512025667 - 215 = 30511992899 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (30512025067) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152542 + ... + 290332.
It is an arithmetic number, because the mean of its divisors is an integer number (3863687680).
Almost surely, 230512025667 is an apocalyptic number.
30512025667 is a deficient number, since it is larger than the sum of its proper divisors (397475773).
30512025667 is a wasteful number, since it uses less digits than its factorization.
30512025667 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 140673.
The product of its (nonzero) digits is 75600, while the sum is 37.
The spelling of 30512025667 in words is "thirty billion, five hundred twelve million, twenty-five thousand, six hundred sixty-seven".
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