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12934762420 = 225646738121
BaseRepresentation
bin11000000101111100…
…01100111110110100
31020101110001000022211
430002332030332310
5202442244344140
65535300503204
7635351444416
oct140276147664
936343030284
1012934762420
1155383774a8
12260b9aab04
1312b1a0ca98
148a9c269b6
1550a8672ea
hex302f8cfb4

12934762420 has 12 divisors (see below), whose sum is σ = 27163001124. Its totient is φ = 5173904960.

The previous prime is 12934762403. The next prime is 12934762429. The reversal of 12934762420 is 2426743921.

It can be written as a sum of positive squares in 2 ways, for example, as 6401920144 + 6532842276 = 80012^2 + 80826^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12934762429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323369041 + ... + 323369080.

It is an arithmetic number, because the mean of its divisors is an integer number (2263583427).

Almost surely, 212934762420 is an apocalyptic number.

12934762420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12934762420 is an abundant number, since it is smaller than the sum of its proper divisors (14228238704).

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

12934762420 is a wasteful number, since it uses less digits than its factorization.

12934762420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646738130 (or 646738128 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 12934762420 in words is "twelve billion, nine hundred thirty-four million, seven hundred sixty-two thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 646738121 1293476242 2586952484 3233690605 6467381210 12934762420