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13180796928 = 2163413191
BaseRepresentation
bin11000100011010001…
…10000000000000000
31021000120222212020000
430101220300000000
5203443241000203
610015530120000
7644426632245
oct142150600000
937016885200
1013180796928
115654241902
12267a280000
131320994530
148d078d5cc
155222664a3
hex311a30000

13180796928 has 340 divisors, whose sum is σ = 42630580608. Its totient is φ = 4034396160.

The previous prime is 13180796927. The next prime is 13180796939. The reversal of 13180796928 is 82969708131.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (13180796927) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 69009313 + ... + 69009503.

Almost surely, 213180796928 is an apocalyptic number.

13180796928 is a gapful number since it is divisible by the number (18) 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 13180796928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21315290304).

13180796928 is an abundant number, since it is smaller than the sum of its proper divisors (29449783680).

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

13180796928 is an frugal number, since it uses more digits than its factorization.

13180796928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The spelling of 13180796928 in words is "thirteen billion, one hundred eighty million, seven hundred ninety-six thousand, nine hundred twenty-eight".