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128088032 = 2531129121
BaseRepresentation
bin1111010001001…
…11011111100000
322221000112202012
413220213133200
5230242304112
620413212052
73113505332
oct750473740
9287015665
10128088032
1166336486
1236a91028
13206c9447
1413023452
15b3a2022
hex7a277e0

128088032 has 24 divisors (see below), whose sum is σ = 260309952. Its totient is φ = 61977600.

The previous prime is 128088031. The next prime is 128088049. The reversal of 128088032 is 230880821.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 128088032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128088031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63569 + ... + 65552.

It is an arithmetic number, because the mean of its divisors is an integer number (10846248).

Almost surely, 2128088032 is an apocalyptic number.

It is an amenable number.

128088032 is an abundant number, since it is smaller than the sum of its proper divisors (132221920).

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

128088032 is a wasteful number, since it uses less digits than its factorization.

128088032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129162 (or 129154 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 128088032 is about 11317.5983318017. The cubic root of 128088032 is about 504.0839282420.

The spelling of 128088032 in words is "one hundred twenty-eight million, eighty-eight thousand, thirty-two".

Divisors: 1 2 4 8 16 31 32 62 124 248 496 992 129121 258242 516484 1032968 2065936 4002751 4131872 8005502 16011004 32022008 64044016 128088032