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128253282 = 23229269347
BaseRepresentation
bin1111010010011…
…11110101100010
322221022221102120
413221033311202
5230313101112
620420525110
73115064163
oct751176542
9287287376
10128253282
1166439653
1236b50796
1320756721
141306776a
15b3d5e8c
hex7a4fd62

128253282 has 32 divisors (see below), whose sum is σ = 259329600. Its totient is φ = 42283968.

The previous prime is 128253263. The next prime is 128253299. The reversal of 128253282 is 282352821.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 369433 + ... + 369779.

It is an arithmetic number, because the mean of its divisors is an integer number (8104050).

Almost surely, 2128253282 is an apocalyptic number.

128253282 is an abundant number, since it is smaller than the sum of its proper divisors (131076318).

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

128253282 is a wasteful number, since it uses less digits than its factorization.

128253282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850.

The product of its digits is 15360, while the sum is 33.

The square root of 128253282 is about 11324.8965558190. The cubic root of 128253282 is about 504.3006127388.

The spelling of 128253282 in words is "one hundred twenty-eight million, two hundred fifty-three thousand, two hundred eighty-two".

Divisors: 1 2 3 6 229 269 347 458 538 687 694 807 1041 1374 1614 2082 61601 79463 93343 123202 158926 184803 186686 238389 280029 369606 476778 560058 21375547 42751094 64126641 128253282