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128130192 = 24323128703
BaseRepresentation
bin1111010001100…
…01110010010000
322221002200120200
413220301302100
5230300131232
620414135200
73114042261
oct750616220
9287080520
10128130192
1166365123
1236ab1500
13207126a8
1413034968
15b3ae77c
hex7a31c90

128130192 has 60 divisors (see below), whose sum is σ = 370166784. Its totient is φ = 41330880.

The previous prime is 128130143. The next prime is 128130199. The reversal of 128130192 is 291031821.

It is a super-2 number, since 2×1281301922 = 32834692203913728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128130199) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9888 + ... + 18815.

Almost surely, 2128130192 is an apocalyptic number.

128130192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128130192 is an abundant number, since it is smaller than the sum of its proper divisors (242036592).

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

128130192 is a wasteful number, since it uses less digits than its factorization.

128130192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28748 (or 28739 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 128130192 is about 11319.4607645417. The cubic root of 128130192 is about 504.1392283529.

The spelling of 128130192 in words is "one hundred twenty-eight million, one hundred thirty thousand, one hundred ninety-two".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 31 36 48 62 72 93 124 144 186 248 279 372 496 558 744 1116 1488 2232 4464 28703 57406 86109 114812 172218 229624 258327 344436 459248 516654 688872 889793 1033308 1377744 1779586 2066616 2669379 3559172 4133232 5338758 7118344 8008137 10677516 14236688 16016274 21355032 32032548 42710064 64065096 128130192