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30853287858 = 235142214643
BaseRepresentation
bin11100101110111111…
…111100111110110010
32221122012220102021010
4130232333330332302
51001141420202413
622101313011350
72141400422361
oct345677747662
987565812233
1030853287858
11120a2970908
125b90853b56
132ba90b4a63
1416c98c57d8
15c089c9dc3
hex72effcfb2

30853287858 has 8 divisors (see below), whose sum is σ = 61706575728. Its totient is φ = 10284429284.

The previous prime is 30853287823. The next prime is 30853287859. The reversal of 30853287858 is 85878235803.

It is a sphenic number, since it is the product of 3 distinct primes.

30853287858 is an admirable number.

It is a super-2 number, since 2×308532878582 (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30853287798 and 30853287807.

It is not an unprimeable number, because it can be changed into a prime (30853287859) 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, 2571107316 + ... + 2571107327.

It is an arithmetic number, because the mean of its divisors is an integer number (7713321966).

Almost surely, 230853287858 is an apocalyptic number.

30853287858 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.

30853287858 is a wasteful number, since it uses less digits than its factorization.

30853287858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5142214648.

The product of its (nonzero) digits is 12902400, while the sum is 57.

The spelling of 30853287858 in words is "thirty billion, eight hundred fifty-three million, two hundred eighty-seven thousand, eight hundred fifty-eight".

Divisors: 1 2 3 6 5142214643 10284429286 15426643929 30853287858