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204160780 = 22510208039
BaseRepresentation
bin11000010101100…
…11111100001100
3112020011102221101
430022303330030
5404231121110
632131512444
75026223635
oct1412637414
9466142841
10204160780
11a527501a
1258458724
13333b30c5
141d18688c
1512dcc13a
hexc2b3f0c

204160780 has 12 divisors (see below), whose sum is σ = 428737680. Its totient is φ = 81664304.

The previous prime is 204160751. The next prime is 204160793. The reversal of 204160780 is 87061402.

204160780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5104000 + ... + 5104039.

It is an arithmetic number, because the mean of its divisors is an integer number (35728140).

Almost surely, 2204160780 is an apocalyptic number.

204160780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204160780 is an abundant number, since it is smaller than the sum of its proper divisors (224576900).

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

204160780 is a wasteful number, since it uses less digits than its factorization.

204160780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10208048 (or 10208046 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 204160780 is about 14288.4841743272. The cubic root of 204160780 is about 588.8311437122.

The spelling of 204160780 in words is "two hundred four million, one hundred sixty thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 10208039 20416078 40832156 51040195 102080390 204160780