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13552211420 = 22511794191861
BaseRepresentation
bin11001001111100011…
…00101010111011100
31021222110212200010022
430213301211113130
5210223331231140
610120434531312
7656556616316
oct144761452734
937873780108
1013552211420
115824963030
122762736b38
13137c907917
14927c327b6
15544b800b5
hex327c655dc

13552211420 has 96 divisors (see below), whose sum is σ = 31531852800. Its totient is φ = 4851475200.

The previous prime is 13552211389. The next prime is 13552211467. The reversal of 13552211420 is 2411225531.

It is a self number, because there is not a number n which added to its sum of digits gives 13552211420.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 7281290 + ... + 7283150.

It is an arithmetic number, because the mean of its divisors is an integer number (328456800).

Almost surely, 213552211420 is an apocalyptic number.

13552211420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13552211420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15765926400).

13552211420 is an abundant number, since it is smaller than the sum of its proper divisors (17979641380).

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

13552211420 is a wasteful number, since it uses less digits than its factorization.

13552211420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2379 (or 2377 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 13552211420 its reverse (2411225531), we get a palindrome (15963436951).

The spelling of 13552211420 in words is "thirteen billion, five hundred fifty-two million, two hundred eleven thousand, four hundred twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 79 110 158 220 316 395 419 790 838 869 1580 1676 1738 1861 2095 3476 3722 4190 4345 4609 7444 8380 8690 9218 9305 17380 18436 18610 20471 23045 33101 37220 40942 46090 66202 81884 92180 102355 132404 147019 165505 204710 294038 331010 364111 409420 588076 662020 728222 735095 779759 1456444 1470190 1559518 1617209 1820555 2940380 3119036 3234418 3641110 3898795 6468836 7282220 7797590 8086045 8577349 15595180 16172090 17154698 32344180 34309396 42886745 61600961 85773490 123201922 171546980 246403844 308004805 616009610 677610571 1232019220 1355221142 2710442284 3388052855 6776105710 13552211420