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13250006887 = 1331101367887
BaseRepresentation
bin11000101011100001…
…10000111101100111
31021012102020002102211
430111300300331213
5204114000210022
610030441344251
7646230125455
oct142560607547
937172202384
1013250006887
11568a313317
122699498087
131332117580
148d9a479d5
15528387e77
hex315c30f67

13250006887 has 32 divisors (see below), whose sum is σ = 14932721664. Its totient is φ = 11673936000.

The previous prime is 13250006857. The next prime is 13250006933. The reversal of 13250006887 is 78860005231.

It is a cyclic number.

It is not a de Polignac number, because 13250006887 - 211 = 13250004839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13250006857) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14937558 + ... + 14938444.

It is an arithmetic number, because the mean of its divisors is an integer number (466647552).

Almost surely, 213250006887 is an apocalyptic number.

13250006887 is a deficient number, since it is larger than the sum of its proper divisors (1682714777).

13250006887 is a wasteful number, since it uses less digits than its factorization.

13250006887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399.

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 13250006887 in words is "thirteen billion, two hundred fifty million, six thousand, eight hundred eighty-seven".

Divisors: 1 13 31 101 367 403 887 1313 3131 4771 11377 11531 27497 37067 40703 89587 147901 325529 357461 481871 1149077 1164631 2777197 4231877 10091399 14938001 32878429 36103561 131188187 427419577 1019231299 13250006887