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12126018260 = 225606300913
BaseRepresentation
bin10110100101100010…
…00101101011010100
31011022002020112220102
423102301011223110
5144313230041020
65323130353232
7606331311626
oct132261055324
934262215812
1012126018260
115162903aa4
122424b8b818
1311b32b7b45
14830662c16
154ae864475
hex2d2c45ad4

12126018260 has 12 divisors (see below), whose sum is σ = 25464638388. Its totient is φ = 4850407296.

The previous prime is 12126018259. The next prime is 12126018319. The reversal of 12126018260 is 6281062121.

It can be written as a sum of positive squares in 2 ways, for example, as 7710947344 + 4415070916 = 87812^2 + 66446^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303150437 + ... + 303150476.

It is an arithmetic number, because the mean of its divisors is an integer number (2122053199).

Almost surely, 212126018260 is an apocalyptic number.

12126018260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12126018260 is an abundant number, since it is smaller than the sum of its proper divisors (13338620128).

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

12126018260 is a wasteful number, since it uses less digits than its factorization.

12126018260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606300922 (or 606300920 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The spelling of 12126018260 in words is "twelve billion, one hundred twenty-six million, eighteen thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 606300913 1212601826 2425203652 3031504565 6063009130 12126018260