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13220302012 = 2243169745293
BaseRepresentation
bin11000100111111110…
…11100110010111100
31021010100022221000021
430103333130302330
5204033344131022
610023500541524
7645416466361
oct142377346274
937110287007
1013220302012
115674574635
12268b5518a4
131328c16a18
148d5b14468
1552596b7c7
hex313fdccbc

13220302012 has 24 divisors (see below), whose sum is σ = 23688037296. Its totient is φ = 6452479488.

The previous prime is 13220301959. The next prime is 13220302013. The reversal of 13220302012 is 21020302231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220302013) 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, 269238 + ... + 314530.

It is an arithmetic number, because the mean of its divisors is an integer number (987001554).

Almost surely, 213220302012 is an apocalyptic number.

It is an amenable number.

13220302012 is a deficient number, since it is larger than the sum of its proper divisors (10467735284).

13220302012 is a wasteful number, since it uses less digits than its factorization.

13220302012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47037 (or 47035 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 13220302012 its reverse (21020302231), we get a palindrome (34240604243).

The spelling of 13220302012 in words is "thirteen billion, two hundred twenty million, three hundred two thousand, twelve".

Divisors: 1 2 4 43 86 172 1697 3394 6788 45293 72971 90586 145942 181172 291884 1947599 3895198 7790396 76862221 153724442 307448884 3305075503 6610151006 13220302012