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128801332 = 22112927303
BaseRepresentation
bin1111010110101…
…01101000110100
322222100210012201
413223111220310
5230433120312
620440354244
73122536042
oct753255064
9288323181
10128801332
1166783390
1237175984
13208b900a
141316b392
15b493557
hex7ad5a34

128801332 has 12 divisors (see below), whose sum is σ = 245893536. Its totient is φ = 58546040.

The previous prime is 128801327. The next prime is 128801341. The reversal of 128801332 is 233108821.

It is a self number, because there is not a number n which added to its sum of digits gives 128801332.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1463608 + ... + 1463695.

It is an arithmetic number, because the mean of its divisors is an integer number (20491128).

Almost surely, 2128801332 is an apocalyptic number.

It is an amenable number.

128801332 is a deficient number, since it is larger than the sum of its proper divisors (117092204).

128801332 is a wasteful number, since it uses less digits than its factorization.

128801332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2927318 (or 2927316 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 128801332 is about 11349.0674506763. The cubic root of 128801332 is about 505.0179152550.

The spelling of 128801332 in words is "one hundred twenty-eight million, eight hundred one thousand, three hundred thirty-two".

Divisors: 1 2 4 11 22 44 2927303 5854606 11709212 32200333 64400666 128801332