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128148356 = 2274576727
BaseRepresentation
bin1111010001101…
…10001110000100
322221010121111102
413220312032010
5230301221411
620414355232
73114146240
oct750661604
9287117442
10128148356
1166377836
1236abbb18
132071aa3b
141303b420
15b3b4d3b
hex7a36384

128148356 has 12 divisors (see below), whose sum is σ = 256296768. Its totient is φ = 54920712.

The previous prime is 128148337. The next prime is 128148359. The reversal of 128148356 is 653841821.

128148356 is an admirable number.

It is a super-2 number, since 2×1281483562 = 32844002291005472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128148359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2288336 + ... + 2288391.

It is an arithmetic number, because the mean of its divisors is an integer number (21358064).

Almost surely, 2128148356 is an apocalyptic number.

It is an amenable number.

128148356 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.

128148356 is a wasteful number, since it uses less digits than its factorization.

128148356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4576738 (or 4576736 counting only the distinct ones).

The product of its digits is 46080, while the sum is 38.

The square root of 128148356 is about 11320.2630711481. The cubic root of 128148356 is about 504.1630498325.

The spelling of 128148356 in words is "one hundred twenty-eight million, one hundred forty-eight thousand, three hundred fifty-six".

Divisors: 1 2 4 7 14 28 4576727 9153454 18306908 32037089 64074178 128148356