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128516048 = 2447170899
BaseRepresentation
bin1111010100011…
…11111111010000
322221211021212122
413222033333100
5230400003143
620430313412
73120240233
oct752177720
9287737778
10128516048
11665a9011
1237058868
13208191cb
14130d541a
15b438c68
hex7a8ffd0

128516048 has 20 divisors (see below), whose sum is σ = 254299200. Its totient is φ = 62890464.

The previous prime is 128516041. The next prime is 128516051. The reversal of 128516048 is 840615821.

It is a junction number, because it is equal to n+sod(n) for n = 128515999 and 128516017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128516041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84698 + ... + 86201.

It is an arithmetic number, because the mean of its divisors is an integer number (12714960).

Almost surely, 2128516048 is an apocalyptic number.

It is an amenable number.

128516048 is a deficient number, since it is larger than the sum of its proper divisors (125783152).

128516048 is a wasteful number, since it uses less digits than its factorization.

128516048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170954 (or 170948 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 128516048 is about 11336.4918735912. The cubic root of 128516048 is about 504.6447823845.

The spelling of 128516048 in words is "one hundred twenty-eight million, five hundred sixteen thousand, forty-eight".

Divisors: 1 2 4 8 16 47 94 188 376 752 170899 341798 683596 1367192 2734384 8032253 16064506 32129012 64258024 128516048