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12440123410 = 2511138699387
BaseRepresentation
bin10111001010111110…
…10011100000010010
31012002222021202011111
423211133103200102
5200434132422120
65414231003534
7620164206241
oct134537234022
935088252144
1012440123410
115304141930
1224b22095aa
1312333b3b90
14860268958
154cc20c75a
hex2e57d3812

12440123410 has 32 divisors (see below), whose sum is σ = 26306949312. Its totient is φ = 4175705280.

The previous prime is 12440123383. The next prime is 12440123411. The reversal of 12440123410 is 1432104421.

It is a happy number.

12440123410 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (12440123411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4348264 + ... + 4351123.

It is an arithmetic number, because the mean of its divisors is an integer number (822092166).

Almost surely, 212440123410 is an apocalyptic number.

12440123410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12440123410 is an abundant number, since it is smaller than the sum of its proper divisors (13866825902).

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

12440123410 is a wasteful number, since it uses less digits than its factorization.

12440123410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8699418.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 12440123410 its reverse (1432104421), we get a palindrome (13872227831).

The spelling of 12440123410 in words is "twelve billion, four hundred forty million, one hundred twenty-three thousand, four hundred ten".

Divisors: 1 2 5 10 11 13 22 26 55 65 110 130 143 286 715 1430 8699387 17398774 43496935 86993870 95693257 113092031 191386514 226184062 478466285 565460155 956932570 1130920310 1244012341 2488024682 6220061705 12440123410