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13047906893 = 761671672731
BaseRepresentation
bin11000010011011011…
…10100001001001101
31020200022221100100212
430021231310021031
5203210231010033
65554421532205
7641224243610
oct141155641115
936608840325
1013047906893
11559622662a
122641874065
1312cc2a6488
148bac7a177
15515766748
hex309b7424d

13047906893 has 32 divisors (see below), whose sum is σ = 15480342528. Its totient is φ = 10767556800.

The previous prime is 13047906797. The next prime is 13047906931. The reversal of 13047906893 is 39860974031.

It is not a de Polignac number, because 13047906893 - 210 = 13047905869 is a prime.

It is a super-3 number, since 3×130479068933 (a number of 31 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13047909893) 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, 4776338 + ... + 4779068.

It is an arithmetic number, because the mean of its divisors is an integer number (483760704).

Almost surely, 213047906893 is an apocalyptic number.

It is an amenable number.

13047906893 is a deficient number, since it is larger than the sum of its proper divisors (2432435635).

13047906893 is a wasteful number, since it uses less digits than its factorization.

13047906893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3033.

The product of its (nonzero) digits is 979776, while the sum is 50.

The spelling of 13047906893 in words is "thirteen billion, forty-seven million, nine hundred six thousand, eight hundred ninety-three".

Divisors: 1 7 61 67 167 427 469 1169 2731 4087 10187 11189 19117 28609 71309 78323 166591 182977 456077 682529 1166137 1280839 3192539 4777703 11161597 27820697 30557159 78131179 194744879 213900113 1863986699 13047906893