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128034680 = 2358633709
BaseRepresentation
bin1111010000110…
…10011101111000
322220220211120012
413220122131320
5230234102210
620412121052
73113163644
oct750323570
9286824505
10128034680
11662aa394
1236a66188
13206ab087
141300bc24
15b391305
hex7a1a778

128034680 has 32 divisors (see below), whose sum is σ = 288489600. Its totient is φ = 51140736.

The previous prime is 128034671. The next prime is 128034719. The reversal of 128034680 is 86430821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32666 + ... + 36374.

It is an arithmetic number, because the mean of its divisors is an integer number (9015300).

Almost surely, 2128034680 is an apocalyptic number.

128034680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128034680 is an abundant number, since it is smaller than the sum of its proper divisors (160454920).

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

128034680 is a wasteful number, since it uses less digits than its factorization.

128034680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4583 (or 4579 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 128034680 is about 11315.2410491337. The cubic root of 128034680 is about 504.0139304960.

The spelling of 128034680 in words is "one hundred twenty-eight million, thirty-four thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 863 1726 3452 3709 4315 6904 7418 8630 14836 17260 18545 29672 34520 37090 74180 148360 3200867 6401734 12803468 16004335 25606936 32008670 64017340 128034680