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13313322220 = 22511112353887
BaseRepresentation
bin11000110011000100…
…10010110011101100
31021100211100211202011
430121202102303230
5204231202302340
610041022411004
7650626241332
oct143142226354
937324324664
1013313322220
115712029040
1226b6730a64
131342285573
14904209b52
1552dbe30ea
hex319892cec

13313322220 has 48 divisors (see below), whose sum is σ = 30527336448. Its totient is φ = 4836807360.

The previous prime is 13313322199. The next prime is 13313322223. The reversal of 13313322220 is 2222331331.

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

It is a junction number, because it is equal to n+sod(n) for n = 13313322191 and 13313322200.

It is not an unprimeable number, because it can be changed into a prime (13313322223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220117 + ... + 274003.

It is an arithmetic number, because the mean of its divisors is an integer number (635986176).

Almost surely, 213313322220 is an apocalyptic number.

13313322220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13313322220 is an abundant number, since it is smaller than the sum of its proper divisors (17214014228).

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

13313322220 is a wasteful number, since it uses less digits than its factorization.

13313322220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55030 (or 55028 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 13313322220 its reverse (2222331331), we get a palindrome (15535653551).

It can be divided in two parts, 13313 and 322220, that added together give a palindrome (335533).

The spelling of 13313322220 in words is "thirteen billion, three hundred thirteen million, three hundred twenty-two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 1123 2246 4492 5615 11230 12353 22460 24706 49412 53887 61765 107774 123530 215548 247060 269435 538870 592757 1077740 1185514 2371028 2963785 5927570 11855140 60515101 121030202 242060404 302575505 605151010 665666111 1210302020 1331332222 2662664444 3328330555 6656661110 13313322220