Search a number
-
+
13260142788 = 22319449129529
BaseRepresentation
bin11000101100101110…
…11011100011000100
31021020010022001021120
430112113123203010
5204124044032123
610031442513540
7646412232264
oct142627334304
937203261246
1013260142788
1156950065a2
1226a09658b0
131334255c49
148db1257a4
155291db2e3
hex3165db8c4

13260142788 has 48 divisors (see below), whose sum is σ = 32641560000. Its totient is φ = 4178055168.

The previous prime is 13260142741. The next prime is 13260142789. The reversal of 13260142788 is 88724106231.

13260142788 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13260142789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37608 + ... + 167136.

It is an arithmetic number, because the mean of its divisors is an integer number (680032500).

Almost surely, 213260142788 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 13260142788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16320780000).

13260142788 is an abundant number, since it is smaller than the sum of its proper divisors (19381417212).

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

13260142788 is a wasteful number, since it uses less digits than its factorization.

13260142788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130004 (or 130002 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The spelling of 13260142788 in words is "thirteen billion, two hundred sixty million, one hundred forty-two thousand, seven hundred eighty-eight".

Divisors: 1 2 3 4 6 12 19 38 57 76 114 228 449 898 1347 1796 2694 5388 8531 17062 25593 34124 51186 102372 129529 259058 388587 518116 777174 1554348 2461051 4922102 7383153 9844204 14766306 29532612 58158521 116317042 174475563 232634084 348951126 697902252 1105011899 2210023798 3315035697 4420047596 6630071394 13260142788