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13264193780 = 225663209689
BaseRepresentation
bin11000101101001101…
…11000100011110100
31021020101220212012022
430112212320203310
5204131113200110
610032105412312
7646461533615
oct142646704364
937211825168
1013264193780
115697323122
1226a219a098
131335043a96
148db89bc0c
1552973b755
hex3169b88f4

13264193780 has 12 divisors (see below), whose sum is σ = 27854806980. Its totient is φ = 5305677504.

The previous prime is 13264193777. The next prime is 13264193791. The reversal of 13264193780 is 8739146231.

13264193780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2675372176 + 10588821604 = 51724^2 + 102902^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 331604825 + ... + 331604864.

It is an arithmetic number, because the mean of its divisors is an integer number (2321233915).

Almost surely, 213264193780 is an apocalyptic number.

13264193780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13264193780 is an abundant number, since it is smaller than the sum of its proper divisors (14590613200).

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

13264193780 is a wasteful number, since it uses less digits than its factorization.

13264193780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663209698 (or 663209696 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 13264193780 in words is "thirteen billion, two hundred sixty-four million, one hundred ninety-three thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 663209689 1326419378 2652838756 3316048445 6632096890 13264193780