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12440421300 = 2235242019871
BaseRepresentation
bin10111001011000000…
…11100001110110100
31012002222211212210110
423211200130032310
5200434221440200
65414241223020
7620166556566
oct134540341664
935088755713
1012440421300
11530432571a
1224b2331a70
131233489648
14860305336
154cc26ab50
hex2e581c3b4

12440421300 has 72 divisors (see below), whose sum is σ = 36006500992. Its totient is φ = 3316320000.

The previous prime is 12440421299. The next prime is 12440421307. The reversal of 12440421300 is 312404421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12440421307) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1255365 + ... + 1265235.

Almost surely, 212440421300 is an apocalyptic number.

12440421300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12440421300 is an abundant number, since it is smaller than the sum of its proper divisors (23566079692).

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

12440421300 is a wasteful number, since it uses less digits than its factorization.

12440421300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14089 (or 14082 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 12440421300 its reverse (312404421), we get a palindrome (12752825721).

The spelling of 12440421300 in words is "twelve billion, four hundred forty million, four hundred twenty-one thousand, three hundred".

Divisors: 1 2 3 4 5 6 10 12 15 20 25 30 50 60 75 100 150 300 4201 8402 9871 12603 16804 19742 21005 25206 29613 39484 42010 49355 50412 59226 63015 84020 98710 105025 118452 126030 148065 197420 210050 246775 252060 296130 315075 420100 493550 592260 630150 740325 987100 1260300 1480650 2961300 41468071 82936142 124404213 165872284 207340355 248808426 414680710 497616852 622021065 829361420 1036701775 1244042130 2073403550 2488084260 3110105325 4146807100 6220210650 12440421300