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128082530290 = 251113160955667
BaseRepresentation
bin111011101001001010…
…0000100111111110010
3110020121021212200200011
41313102110010333302
54044303111432130
6134501301045134
712153001354441
oct1672224047762
9406537780604
10128082530290
114a357281820
12209a66b67aa
13c102865480
1462b0974d58
1534e985452a
hex1dd2504ff2

128082530290 has 64 divisors (see below), whose sum is σ = 271027451520. Its totient is φ = 42965245440.

The previous prime is 128082530281. The next prime is 128082530297. The reversal of 128082530290 is 92035280821.

It is not an unprimeable number, because it can be changed into a prime (128082530297) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2273037 + ... + 2328703.

It is an arithmetic number, because the mean of its divisors is an integer number (4234803930).

Almost surely, 2128082530290 is an apocalyptic number.

128082530290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128082530290 is an abundant number, since it is smaller than the sum of its proper divisors (142944921230).

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

128082530290 is a wasteful number, since it uses less digits than its factorization.

128082530290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57307.

The product of its (nonzero) digits is 69120, while the sum is 40.

The spelling of 128082530290 in words is "one hundred twenty-eight billion, eighty-two million, five hundred thirty thousand, two hundred ninety".

Divisors: 1 2 5 10 11 13 22 26 55 65 110 130 143 286 715 1430 1609 3218 8045 16090 17699 20917 35398 41834 55667 88495 104585 111334 176990 209170 230087 278335 460174 556670 612337 723671 1150435 1224674 1447342 2300870 3061685 3618355 6123370 7236710 7960381 15920762 39801905 79603810 89568203 179136406 447841015 895682030 985250233 1164386639 1970500466 2328773278 4926251165 5821933195 9852502330 11643866390 12808253029 25616506058 64041265145 128082530290