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29687007069 = 32157153113723
BaseRepresentation
bin11011101001011110…
…111100011101011101
32211121221100012210100
4123221132330131131
5441244333211234
621345451331313
72100446253006
oct335136743535
984557305710
1029687007069
11116545a5895
125906150b39
132a51598395
141618a521ad
15b8b400399
hex6e97bc75d

29687007069 has 24 divisors (see below), whose sum is σ = 43185695072. Its totient is φ = 19651001760.

The previous prime is 29687007041. The next prime is 29687007079. The reversal of 29687007069 is 96070078692.

It is not a de Polignac number, because 29687007069 - 220 = 29685958493 is a prime.

It is a super-2 number, since 2×296870070692 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29687007029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2156442 + ... + 2170164.

Almost surely, 229687007069 is an apocalyptic number.

It is an amenable number.

29687007069 is a deficient number, since it is larger than the sum of its proper divisors (13498688003).

29687007069 is a wasteful number, since it uses less digits than its factorization.

29687007069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15417 (or 15414 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 29687007069 in words is "twenty-nine billion, six hundred eighty-seven million, seven thousand, sixty-nine".

Divisors: 1 3 9 157 471 1413 1531 4593 13723 13779 41169 123507 240367 721101 2154511 2163303 6463533 19390599 21009913 63029739 189089217 3298556341 9895669023 29687007069