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128463234 = 23231635711
BaseRepresentation
bin1111010100000…
…11000110000010
322221201121102120
413222003012002
5230341310414
620425225110
73116630244
oct752030602
9287647376
10128463234
1166572369
1237032196
13207cb163
14130c0094
15b4282a9
hex7a83182

128463234 has 32 divisors (see below), whose sum is σ = 269789184. Its totient is φ = 40700880.

The previous prime is 128463227. The next prime is 128463281. The reversal of 128463234 is 432364821.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 128463195 and 128463204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19639 + ... + 25349.

It is an arithmetic number, because the mean of its divisors is an integer number (8430912).

Almost surely, 2128463234 is an apocalyptic number.

128463234 is an abundant number, since it is smaller than the sum of its proper divisors (141325950).

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

128463234 is a wasteful number, since it uses less digits than its factorization.

128463234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5902.

The product of its digits is 27648, while the sum is 33.

The square root of 128463234 is about 11334.1622540001. The cubic root of 128463234 is about 504.5756445563.

The spelling of 128463234 in words is "one hundred twenty-eight million, four hundred sixty-three thousand, two hundred thirty-four".

Divisors: 1 2 3 6 23 46 69 138 163 326 489 978 3749 5711 7498 11247 11422 17133 22494 34266 131353 262706 394059 788118 930893 1861786 2792679 5585358 21410539 42821078 64231617 128463234