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130128810 = 2357288523
BaseRepresentation
bin1111100000110…
…01101110101010
3100001212020011120
413300121232222
5231303110220
620525040110
73140035200
oct760315652
9301766146
10130128810
11674aa779
12376b6036
1320c622c6
14133d5070
15b656a40
hex7c19baa

130128810 has 48 divisors (see below), whose sum is σ = 363302496. Its totient is φ = 29743392.

The previous prime is 130128797. The next prime is 130128827. The reversal of 130128810 is 18821031.

It is a super-2 number, since 2×1301288102 = 33867014384032200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42792 + ... + 45731.

It is an arithmetic number, because the mean of its divisors is an integer number (7568802).

Almost surely, 2130128810 is an apocalyptic number.

130128810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

130128810 is an abundant number, since it is smaller than the sum of its proper divisors (233173686).

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

130128810 is a wasteful number, since it uses less digits than its factorization.

130128810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88547 (or 88540 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 130128810 is about 11407.4015446113. The cubic root of 130128810 is about 506.7469608627.

Adding to 130128810 its reverse (18821031), we get a palindrome (148949841).

The spelling of 130128810 in words is "one hundred thirty million, one hundred twenty-eight thousand, eight hundred ten".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 49 70 98 105 147 210 245 294 490 735 1470 88523 177046 265569 442615 531138 619661 885230 1239322 1327845 1858983 2655690 3098305 3717966 4337627 6196610 8675254 9294915 13012881 18589830 21688135 26025762 43376270 65064405 130128810