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128053772 = 22711415759
BaseRepresentation
bin1111010000111…
…11001000001100
322220221210202022
413220133020030
5230240210042
620412345312
73113303420
oct750371014
9286853668
10128053772
1166312770
1236a75238
13206b6982
1413014b80
15b396cd2
hex7a1f20c

128053772 has 24 divisors (see below), whose sum is σ = 279390720. Its totient is φ = 49890960.

The previous prime is 128053769. The next prime is 128053789. The reversal of 128053772 is 277350821.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207572 + ... + 208187.

It is an arithmetic number, because the mean of its divisors is an integer number (11641280).

Almost surely, 2128053772 is an apocalyptic number.

It is an amenable number.

128053772 is an abundant number, since it is smaller than the sum of its proper divisors (151336948).

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

128053772 is a wasteful number, since it uses less digits than its factorization.

128053772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415781 (or 415779 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 128053772 is about 11316.0846585734. The cubic root of 128053772 is about 504.0389814059.

The spelling of 128053772 in words is "one hundred twenty-eight million, fifty-three thousand, seven hundred seventy-two".

Divisors: 1 2 4 7 11 14 22 28 44 77 154 308 415759 831518 1663036 2910313 4573349 5820626 9146698 11641252 18293396 32013443 64026886 128053772