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13412312020 = 2252083321947
BaseRepresentation
bin11000111110110111…
…11010001111010100
31021121201122001020001
430133123322033110
5204432022441040
610054520221044
7653240525332
oct143733721724
937551561201
1013412312020
11576299a598
12272390a784
131359934303
14913416b52
1553774859a
hex31f6fa3d4

13412312020 has 24 divisors (see below), whose sum is σ = 28179464544. Its totient is φ = 5362332576.

The previous prime is 13412312009. The next prime is 13412312029. The reversal of 13412312020 is 2021321431.

It is a happy number.

It is a super-2 number, since 2×134123120202 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13412312029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119314 + ... + 202633.

It is an arithmetic number, because the mean of its divisors is an integer number (1174144356).

Almost surely, 213412312020 is an apocalyptic number.

13412312020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13412312020 is an abundant number, since it is smaller than the sum of its proper divisors (14767152524).

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

13412312020 is a wasteful number, since it uses less digits than its factorization.

13412312020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324039 (or 324037 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 13412312020 its reverse (2021321431), we get a palindrome (15433633451).

The spelling of 13412312020 in words is "thirteen billion, four hundred twelve million, three hundred twelve thousand, twenty".

Divisors: 1 2 4 5 10 20 2083 4166 8332 10415 20830 41660 321947 643894 1287788 1609735 3219470 6438940 670615601 1341231202 2682462404 3353078005 6706156010 13412312020