Base | Representation |
---|---|
bin | 11100000110111110… |
… | …100111000001110010 |
3 | 2212220102110200202220 |
4 | 130012332213001302 |
5 | 443303023102104 |
6 | 21510525421510 |
7 | 2115635316324 |
oct | 340676470162 |
9 | 85812420686 |
10 | 30181847154 |
11 | 11888958538 |
12 | 5a23a0a896 |
13 | 2accc64974 |
14 | 1664663614 |
15 | bb9a997d9 |
hex | 706fa7072 |
30181847154 has 8 divisors (see below), whose sum is σ = 60363694320. Its totient is φ = 10060615716.
The previous prime is 30181847131. The next prime is 30181847159. The reversal of 30181847154 is 45174818103.
It is a sphenic number, since it is the product of 3 distinct primes.
30181847154 is an admirable number.
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (30181847159) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2515153924 + ... + 2515153935.
It is an arithmetic number, because the mean of its divisors is an integer number (7545461790).
Almost surely, 230181847154 is an apocalyptic number.
30181847154 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30181847154 is a wasteful number, since it uses less digits than its factorization.
30181847154 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5030307864.
The product of its (nonzero) digits is 107520, while the sum is 42.
The spelling of 30181847154 in words is "thirty billion, one hundred eighty-one million, eight hundred forty-seven thousand, one hundred fifty-four".
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