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12143670740 = 225607183537
BaseRepresentation
bin10110100111101000…
…11011010111010100
31011100022110101112222
423103310123113110
5144332234430430
65325001001512
7606634332605
oct132364332724
934308411488
1012143670740
115171870623
12242aa83298
1311b6b588b6
14832b39dac
154b119e9e5
hex2d3d1b5d4

12143670740 has 12 divisors (see below), whose sum is σ = 25501708596. Its totient is φ = 4857468288.

The previous prime is 12143670713. The next prime is 12143670761. The reversal of 12143670740 is 4707634121.

It can be written as a sum of positive squares in 2 ways, for example, as 3582980164 + 8560690576 = 59858^2 + 92524^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12143670740.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303591749 + ... + 303591788.

It is an arithmetic number, because the mean of its divisors is an integer number (2125142383).

Almost surely, 212143670740 is an apocalyptic number.

12143670740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12143670740 is an abundant number, since it is smaller than the sum of its proper divisors (13358037856).

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

12143670740 is a wasteful number, since it uses less digits than its factorization.

12143670740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607183546 (or 607183544 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The spelling of 12143670740 in words is "twelve billion, one hundred forty-three million, six hundred seventy thousand, seven hundred forty".

Divisors: 1 2 4 5 10 20 607183537 1214367074 2428734148 3035917685 6071835370 12143670740