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13216310220 = 2235821268297
BaseRepresentation
bin11000100111100000…
…01110001111001100
31021010001211010022010
430103300032033030
5204031333411340
610023235221220
7645340532451
oct142360161714
937101733263
1013216310220
115672298533
12268a147810
131328149b09
148d5395828
1552542db80
hex313c0e3cc

13216310220 has 48 divisors (see below), whose sum is σ = 37050880608. Its totient is φ = 3520043520.

The previous prime is 13216310167. The next prime is 13216310227. The reversal of 13216310220 is 2201361231.

It is not an unprimeable number, because it can be changed into a prime (13216310227) 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, 84889 + ... + 183408.

It is an arithmetic number, because the mean of its divisors is an integer number (771893346).

Almost surely, 213216310220 is an apocalyptic number.

13216310220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13216310220 is an abundant number, since it is smaller than the sum of its proper divisors (23834570388).

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

13216310220 is a wasteful number, since it uses less digits than its factorization.

13216310220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269130 (or 269128 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 13216310220 its reverse (2201361231), we get a palindrome (15417671451).

The spelling of 13216310220 in words is "thirteen billion, two hundred sixteen million, three hundred ten thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 821 1642 2463 3284 4105 4926 8210 9852 12315 16420 24630 49260 268297 536594 804891 1073188 1341485 1609782 2682970 3219564 4024455 5365940 8048910 16097820 220271837 440543674 660815511 881087348 1101359185 1321631022 2202718370 2643262044 3304077555 4405436740 6608155110 13216310220