Base | Representation |
---|---|
bin | 11100011100111001… |
… | …110101100111111011 |
3 | 2220212001122022010010 |
4 | 130130321311213323 |
5 | 1000031210214341 |
6 | 22011225553003 |
7 | 2131023060045 |
oct | 343471654773 |
9 | 86761568103 |
10 | 30549694971 |
11 | 11a57562aa4 |
12 | 5b07045763 |
13 | 2b5b2297b3 |
14 | 169b458a95 |
15 | bdc00b716 |
hex | 71ce759fb |
30549694971 has 8 divisors (see below), whose sum is σ = 40734536704. Its totient is φ = 20365658280.
The previous prime is 30549694969. The next prime is 30549694991. The reversal of 30549694971 is 17949694503.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 30549694971 - 21 = 30549694969 is a prime.
It is a super-2 number, since 2×305496949712 (a number of 22 digits) contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (30549694991) 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 7 ways as a sum of consecutive naturals, for example, 106315 + ... + 269076.
It is an arithmetic number, because the mean of its divisors is an integer number (5091817088).
Almost surely, 230549694971 is an apocalyptic number.
30549694971 is a deficient number, since it is larger than the sum of its proper divisors (10184841733).
30549694971 is a wasteful number, since it uses less digits than its factorization.
30549694971 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 402521.
The product of its (nonzero) digits is 7348320, while the sum is 57.
The spelling of 30549694971 in words is "thirty billion, five hundred forty-nine million, six hundred ninety-four thousand, nine hundred seventy-one".
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