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128142182 = 2728132573
BaseRepresentation
bin1111010001101…
…00101101100110
322221010022000202
413220310231212
5230301022212
620414310502
73114122240
oct750645546
9287108022
10128142182
1166373133
1236ab8432
1320717c9c
1413039090
15b3b30c2
hex7a34b66

128142182 has 16 divisors (see below), whose sum is σ = 220460832. Its totient is φ = 54720960.

The previous prime is 128142173. The next prime is 128142247. The reversal of 128142182 is 281241821.

It is a super-2 number, since 2×1281421822 = 32840837615442248, which contains 22 as substring.

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, 12353 + ... + 20220.

It is an arithmetic number, because the mean of its divisors is an integer number (13778802).

Almost surely, 2128142182 is an apocalyptic number.

128142182 is a deficient number, since it is larger than the sum of its proper divisors (92318650).

128142182 is a wasteful number, since it uses less digits than its factorization.

128142182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32863.

The product of its digits is 2048, while the sum is 29.

The square root of 128142182 is about 11319.9903710206. The cubic root of 128142182 is about 504.1549530902.

The spelling of 128142182 in words is "one hundred twenty-eight million, one hundred forty-two thousand, one hundred eighty-two".

Divisors: 1 2 7 14 281 562 1967 3934 32573 65146 228011 456022 9153013 18306026 64071091 128142182