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29710121 = 723119559
BaseRepresentation
bin111000101010…
…1011100101001
32001220102121212
41301111130221
530101210441
62540442505
7510350300
oct161253451
961812555
1029710121
1115852721
129b49435
13620306c
143d35437
15291ceeb
hex1c55729

29710121 has 12 divisors (see below), whose sum is σ = 35677440. Its totient is φ = 24643080.

The previous prime is 29710049. The next prime is 29710127. The reversal of 29710121 is 12101792.

It is a de Polignac number, because none of the positive numbers 2k-29710121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (29710127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8261 + ... + 11298.

It is an arithmetic number, because the mean of its divisors is an integer number (2973120).

Almost surely, 229710121 is an apocalyptic number.

It is an amenable number.

29710121 is a deficient number, since it is larger than the sum of its proper divisors (5967319).

29710121 is a wasteful number, since it uses less digits than its factorization.

29710121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19604 (or 19597 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 29710121 is about 5450.6991294695. The cubic root of 29710121 is about 309.7192081066.

The spelling of 29710121 in words is "twenty-nine million, seven hundred ten thousand, one hundred twenty-one".

Divisors: 1 7 31 49 217 1519 19559 136913 606329 958391 4244303 29710121