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30853151780 = 22511157189269
BaseRepresentation
bin11100101110111111…
…011011110000100100
32221122012122111121012
4130232333123300210
51001141401324110
622101310041352
72141366314553
oct345677336044
987565574535
1030853151780
11120a2888650
125b907a9258
132ba9067b39
1416c988bd9a
15c0899e905
hex72efdbc24

30853151780 has 48 divisors (see below), whose sum is σ = 70727549760. Its totient is φ = 11212060800.

The previous prime is 30853151761. The next prime is 30853151783. The reversal of 30853151780 is 8715135803.

It is not an unprimeable number, because it can be changed into a prime (30853151783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300986 + ... + 390254.

It is an arithmetic number, because the mean of its divisors is an integer number (1473490620).

Almost surely, 230853151780 is an apocalyptic number.

It is an amenable number.

30853151780 is an abundant number, since it is smaller than the sum of its proper divisors (39874397980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30853151780 is a wasteful number, since it uses less digits than its factorization.

30853151780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90860 (or 90858 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 41.

The spelling of 30853151780 in words is "thirty billion, eight hundred fifty-three million, one hundred fifty-one thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 1571 3142 6284 7855 15710 17281 31420 34562 69124 86405 89269 172810 178538 345620 357076 446345 892690 981959 1785380 1963918 3927836 4909795 9819590 19639180 140241599 280483198 560966396 701207995 1402415990 1542657589 2804831980 3085315178 6170630356 7713287945 15426575890 30853151780