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128000204 = 2261524591
BaseRepresentation
bin1111010000100…
…10000011001100
322220212002021022
413220102003030
5230232001304
620411253312
73112661303
oct750220314
9286762238
10128000204
11662864a2
1236a4a238
1320698487
1412ddd43a
15b385ebe
hex7a120cc

128000204 has 12 divisors (see below), whose sum is σ = 227672928. Its totient is φ = 62950800.

The previous prime is 128000203. The next prime is 128000219. The reversal of 128000204 is 402000821.

It is not an unprimeable number, because it can be changed into a prime (128000203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262052 + ... + 262539.

It is an arithmetic number, because the mean of its divisors is an integer number (18972744).

Almost surely, 2128000204 is an apocalyptic number.

It is an amenable number.

128000204 is a deficient number, since it is larger than the sum of its proper divisors (99672724).

128000204 is a wasteful number, since it uses less digits than its factorization.

128000204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524656 (or 524654 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 128000204 is about 11313.7175145926. The cubic root of 128000204 is about 503.9686876910.

The spelling of 128000204 in words is "one hundred twenty-eight million, two hundred four", and thus it is an aban number.

Divisors: 1 2 4 61 122 244 524591 1049182 2098364 32000051 64000102 128000204