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130561912 = 231310631181
BaseRepresentation
bin1111100100000…
…11011101111000
3100002200020021101
413302003131320
5231410440122
620542221144
73143520655
oct762033570
9302606241
10130561912
1167776108
12378847b4
1321084490
14134a8c2c
15b6e0027
hex7c83778

130561912 has 32 divisors (see below), whose sum is σ = 264106080. Its totient is φ = 60151680.

The previous prime is 130561897. The next prime is 130561913. The reversal of 130561912 is 219165031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130561913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109962 + ... + 111142.

It is an arithmetic number, because the mean of its divisors is an integer number (8253315).

Almost surely, 2130561912 is an apocalyptic number.

It is an amenable number.

130561912 is an abundant number, since it is smaller than the sum of its proper divisors (133544168).

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

130561912 is a wasteful number, since it uses less digits than its factorization.

130561912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2263 (or 2259 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 130561912 is about 11426.3691520973. The cubic root of 130561912 is about 507.3085328515.

The spelling of 130561912 in words is "one hundred thirty million, five hundred sixty-one thousand, nine hundred twelve".

Divisors: 1 2 4 8 13 26 52 104 1063 1181 2126 2362 4252 4724 8504 9448 13819 15353 27638 30706 55276 61412 110552 122824 1255403 2510806 5021612 10043224 16320239 32640478 65280956 130561912