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13213010020 = 2257194967297
BaseRepresentation
bin11000100111000111…
…01000100001100100
31021002211121110021111
430103203220201210
5204030012310040
610023040354404
7645300506050
oct142343504144
937084543244
1013213010020
115670443aa1
122689015a04
131327562932
148d4b76c60
15524ecadea
hex3138e8864

13213010020 has 48 divisors (see below), whose sum is σ = 33380242560. Its totient is φ = 4291743744.

The previous prime is 13213009987. The next prime is 13213010059. The reversal of 13213010020 is 2001031231.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2480989 + ... + 2486308.

It is an arithmetic number, because the mean of its divisors is an integer number (695421720).

Almost surely, 213213010020 is an apocalyptic number.

13213010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13213010020 is an abundant number, since it is smaller than the sum of its proper divisors (20167232540).

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

13213010020 is a wasteful number, since it uses less digits than its factorization.

13213010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4967332 (or 4967330 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 13213010020 its reverse (2001031231), we get a palindrome (15214041251).

The spelling of 13213010020 in words is "thirteen billion, two hundred thirteen million, ten thousand, twenty".

Divisors: 1 2 4 5 7 10 14 19 20 28 35 38 70 76 95 133 140 190 266 380 532 665 1330 2660 4967297 9934594 19869188 24836485 34771079 49672970 69542158 94378643 99345940 139084316 173855395 188757286 347710790 377514572 471893215 660650501 695421580 943786430 1321301002 1887572860 2642602004 3303252505 6606505010 13213010020