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128339130 = 2354277971
BaseRepresentation
bin1111010011001…
…00110010111010
322221111022012010
413221210302322
5230323323010
620422430350
73115602363
oct751446272
9287438163
10128339130
11664980a7
1236b923b6
132078681a
141308ab6a
15b401620
hex7a64cba

128339130 has 16 divisors (see below), whose sum is σ = 308013984. Its totient is φ = 34223760.

The previous prime is 128339119. The next prime is 128339153. The reversal of 128339130 is 31933821.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 4277971 = 128339130 / (1 + 2 + 8 + 3 + 3 + 9 + 1 + 3 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2138956 + ... + 2139015.

It is an arithmetic number, because the mean of its divisors is an integer number (19250874).

Almost surely, 2128339130 is an apocalyptic number.

128339130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128339130 is an abundant number, since it is smaller than the sum of its proper divisors (179674854).

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

128339130 is a wasteful number, since it uses less digits than its factorization.

128339130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4277981.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 128339130 is about 11328.6861550667. The cubic root of 128339130 is about 504.4131076975.

The spelling of 128339130 in words is "one hundred twenty-eight million, three hundred thirty-nine thousand, one hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 4277971 8555942 12833913 21389855 25667826 42779710 64169565 128339130