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12440044230 = 2351961335603
BaseRepresentation
bin10111001010111110…
…00000001011000110
31012002222010201112220
423211133000023012
5200434122403410
65414225153210
7620163426345
oct134537001306
935088121486
1012440044230
115304098399
1224b218b806
131233386b23
14860247b5c
154cc1e4070
hex2e57c02c6

12440044230 has 64 divisors (see below), whose sum is σ = 31479632640. Its totient is φ = 3137533056.

The previous prime is 12440044223. The next prime is 12440044241. The reversal of 12440044230 is 3244004421.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12440044230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 331609 + ... + 367211.

It is an arithmetic number, because the mean of its divisors is an integer number (491869260).

Almost surely, 212440044230 is an apocalyptic number.

12440044230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12440044230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15739816320).

12440044230 is an abundant number, since it is smaller than the sum of its proper divisors (19039588410).

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

12440044230 is a wasteful number, since it uses less digits than its factorization.

12440044230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36245.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 12440044230 its reverse (3244004421), we get a palindrome (15684048651).

The spelling of 12440044230 in words is "twelve billion, four hundred forty million, forty-four thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 19 30 38 57 95 114 190 285 570 613 1226 1839 3065 3678 6130 9195 11647 18390 23294 34941 35603 58235 69882 71206 106809 116470 174705 178015 213618 349410 356030 534045 676457 1068090 1352914 2029371 3382285 4058742 6764570 10146855 20293710 21824639 43649278 65473917 109123195 130947834 218246390 327369585 414668141 654739170 829336282 1244004423 2073340705 2488008846 4146681410 6220022115 12440044230