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29986808841 = 3211378186407
BaseRepresentation
bin11011111011010110…
…100110010000001001
32212101211110201111200
4123323112212100021
5442403110340331
621435321214413
72111046445443
oct337326462011
985354421450
1029986808841
1111798854350
12598a631409
132a9b726b92
1416467b3493
15ba78c05e6
hex6fb5a6409

29986808841 has 24 divisors (see below), whose sum is σ = 48529026624. Its totient is φ = 17682636960.

The previous prime is 29986808833. The next prime is 29986808879. The reversal of 29986808841 is 14880868992.

It is not a de Polignac number, because 29986808841 - 23 = 29986808833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29986808041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4089541 + ... + 4096866.

It is an arithmetic number, because the mean of its divisors is an integer number (2022042776).

Almost surely, 229986808841 is an apocalyptic number.

It is an amenable number.

29986808841 is a deficient number, since it is larger than the sum of its proper divisors (18542217783).

29986808841 is a wasteful number, since it uses less digits than its factorization.

29986808841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8186461 (or 8186458 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 63.

The spelling of 29986808841 in words is "twenty-nine billion, nine hundred eighty-six million, eight hundred eight thousand, eight hundred forty-one".

Divisors: 1 3 9 11 33 37 99 111 333 407 1221 3663 8186407 24559221 73677663 90050477 270151431 302897059 810454293 908691177 2726073531 3331867649 9995602947 29986808841