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128075922 = 232131928807
BaseRepresentation
bin1111010001001…
…00100010010010
322220222221010200
413220210202102
5230241412142
620413040030
73113425122
oct750444222
9286887120
10128075922
1166328377
1236a86016
13206c3a90
141301cc82
15b39d64c
hex7a24892

128075922 has 48 divisors (see below), whose sum is σ = 314583360. Its totient is φ = 37332576.

The previous prime is 128075921. The next prime is 128075939. The reversal of 128075922 is 229570821.

It is not an unprimeable number, because it can be changed into a prime (128075921) 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 23 ways as a sum of consecutive naturals, for example, 9958 + ... + 18849.

It is an arithmetic number, because the mean of its divisors is an integer number (6553820).

Almost surely, 2128075922 is an apocalyptic number.

128075922 is an abundant number, since it is smaller than the sum of its proper divisors (186507438).

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

128075922 is a wasteful number, since it uses less digits than its factorization.

128075922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28847 (or 28844 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 128075922 is about 11317.0633116547. The cubic root of 128075922 is about 504.0680416452.

The spelling of 128075922 in words is "one hundred twenty-eight million, seventy-five thousand, nine hundred twenty-two".

Divisors: 1 2 3 6 9 13 18 19 26 38 39 57 78 114 117 171 234 247 342 494 741 1482 2223 4446 28807 57614 86421 172842 259263 374491 518526 547333 748982 1094666 1123473 1641999 2246946 3283998 3370419 4925997 6740838 7115329 9851994 14230658 21345987 42691974 64037961 128075922