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13278051960 = 23351719675113
BaseRepresentation
bin11000101110110111…
…01111111001111000
31021021100222221001020
430113123233321320
5204143140130320
610033322422440
7650020402515
oct142733577170
937240887036
1013278051960
1156a4128a68
1226a6961a20
131337b867a4
148dd66830c
1552aa77940
hex3176efe78

13278051960 has 256 divisors, whose sum is σ = 45068659200. Its totient is φ = 3109404672.

The previous prime is 13278051937. The next prime is 13278051971. The reversal of 13278051960 is 6915087231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2594364 + ... + 2599476.

It is an arithmetic number, because the mean of its divisors is an integer number (176049450).

Almost surely, 213278051960 is an apocalyptic number.

13278051960 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 13278051960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22534329600).

13278051960 is an abundant number, since it is smaller than the sum of its proper divisors (31790607240).

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

13278051960 is a wasteful number, since it uses less digits than its factorization.

13278051960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5230 (or 5226 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The spelling of 13278051960 in words is "thirteen billion, two hundred seventy-eight million, fifty-one thousand, nine hundred sixty".