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29831841 = 331384991
BaseRepresentation
bin111000111001…
…1001010100001
32002010121121000
41301303022201
530114104331
62543222213
7511365204
oct161631241
962117530
1029831841
1115926116
129ba7969
1362465a0
143d6793b
1529440e6
hex1c732a1

29831841 has 16 divisors (see below), whose sum is σ = 47595520. Its totient is φ = 18357840.

The previous prime is 29831819. The next prime is 29831849. The reversal of 29831841 is 14813892.

It is not a de Polignac number, because 29831841 - 215 = 29799073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29831796 and 29831805.

It is not an unprimeable number, because it can be changed into a prime (29831849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42145 + ... + 42846.

It is an arithmetic number, because the mean of its divisors is an integer number (2974720).

Almost surely, 229831841 is an apocalyptic number.

It is an amenable number.

29831841 is a deficient number, since it is larger than the sum of its proper divisors (17763679).

29831841 is a wasteful number, since it uses less digits than its factorization.

29831841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85013 (or 85007 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 29831841 is about 5461.8532569083. The cubic root of 29831841 is about 310.1415967776.

The spelling of 29831841 in words is "twenty-nine million, eight hundred thirty-one thousand, eight hundred forty-one".

Divisors: 1 3 9 13 27 39 117 351 84991 254973 764919 1104883 2294757 3314649 9943947 29831841