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13220202108 = 22323461103903
BaseRepresentation
bin11000100111111110…
…00100011001111100
31021010100010211222010
430103333010121330
5204033332431413
610023454451220
7645415602201
oct142377043174
937110124863
1013220202108
115674506573
12268b503b10
131328bb03c9
148d5ac9ca8
1552594bdc3
hex313fc467c

13220202108 has 48 divisors (see below), whose sum is σ = 32258451456. Its totient is φ = 4205952960.

The previous prime is 13220202103. The next prime is 13220202179. The reversal of 13220202108 is 80120202231.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220202101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75285 + ... + 179187.

It is an arithmetic number, because the mean of its divisors is an integer number (672051072).

Almost surely, 213220202108 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13220202108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16129225728).

13220202108 is an abundant number, since it is smaller than the sum of its proper divisors (19038249348).

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

13220202108 is a wasteful number, since it uses less digits than its factorization.

13220202108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104394 (or 104392 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 13220202108 its reverse (80120202231), we get a palindrome (93340404339).

The spelling of 13220202108 in words is "thirteen billion, two hundred twenty million, two hundred two thousand, one hundred eight".

Divisors: 1 2 3 4 6 12 23 46 69 92 138 276 461 922 1383 1844 2766 5532 10603 21206 31809 42412 63618 103903 127236 207806 311709 415612 623418 1246836 2389769 4779538 7169307 9559076 14338614 28677228 47899283 95798566 143697849 191597132 287395698 574791396 1101683509 2203367018 3305050527 4406734036 6610101054 13220202108