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12231254320 = 245641238519
BaseRepresentation
bin10110110010000101…
…00010000100110000
31011120102021002122021
423121002202010300
5200022200114240
65341410121224
7612046642405
oct133102420460
934512232567
1012231254320
11520725144a
122454280214
1311cc0429bc
148406182ac
154b8c0054a
hex2d90a2130

12231254320 has 40 divisors (see below), whose sum is σ = 28482150240. Its totient is φ = 4884848640.

The previous prime is 12231254311. The next prime is 12231254359. The reversal of 12231254320 is 2345213221.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67980 + ... + 170539.

It is an arithmetic number, because the mean of its divisors is an integer number (712053756).

Almost surely, 212231254320 is an apocalyptic number.

12231254320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12231254320 is an abundant number, since it is smaller than the sum of its proper divisors (16250895920).

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

12231254320 is a wasteful number, since it uses less digits than its factorization.

12231254320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239173 (or 239167 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 12231254320 its reverse (2345213221), we get a palindrome (14576467541).

The spelling of 12231254320 in words is "twelve billion, two hundred thirty-one million, two hundred fifty-four thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 40 80 641 1282 2564 3205 5128 6410 10256 12820 25640 51280 238519 477038 954076 1192595 1908152 2385190 3816304 4770380 9540760 19081520 152890679 305781358 611562716 764453395 1223125432 1528906790 2446250864 3057813580 6115627160 12231254320