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128893110 = 23529148153
BaseRepresentation
bin1111010111011…
…00000010110110
322222112110002220
413223230002312
5230444034420
620442343210
73123400443
oct753540266
9288473086
10128893110
1166836335
12371bab06
132091ba18
14131929ca
15b4b0840
hex7aec0b6

128893110 has 32 divisors (see below), whose sum is σ = 320012640. Its totient is φ = 33186048.

The previous prime is 128893109. The next prime is 128893117. The reversal of 128893110 is 11398821.

It is a super-2 number, since 2×1288931102 = 33226867610944200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128893117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73207 + ... + 74946.

It is an arithmetic number, because the mean of its divisors is an integer number (10000395).

Almost surely, 2128893110 is an apocalyptic number.

128893110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128893110 is an abundant number, since it is smaller than the sum of its proper divisors (191119530).

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

128893110 is a wasteful number, since it uses less digits than its factorization.

128893110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148192.

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 128893110 is about 11353.1101465634. The cubic root of 128893110 is about 505.1378377460.

The spelling of 128893110 in words is "one hundred twenty-eight million, eight hundred ninety-three thousand, one hundred ten".

Divisors: 1 2 3 5 6 10 15 29 30 58 87 145 174 290 435 870 148153 296306 444459 740765 888918 1481530 2222295 4296437 4444590 8592874 12889311 21482185 25778622 42964370 64446555 128893110