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29666161 = 74319833
BaseRepresentation
bin111000100101…
…0101101110001
32001211012022201
41301022231301
530043304121
62535503201
7510105160
oct161125561
961735281
1029666161
1115822698
129b27b01
1361b9055
143d233d7
15290ee91
hex1c4ab71

29666161 has 8 divisors (see below), whose sum is σ = 33986304. Its totient is φ = 25366560.

The previous prime is 29666149. The next prime is 29666177. The reversal of 29666161 is 16166692.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-29666161 is a prime.

It is a super-2 number, since 2×296661612 = 1760162216955842, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 29666161.

It is not an unprimeable number, because it can be changed into a prime (29666111) 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 7 ways as a sum of consecutive naturals, for example, 1900 + ... + 7933.

It is an arithmetic number, because the mean of its divisors is an integer number (4248288).

Almost surely, 229666161 is an apocalyptic number.

It is an amenable number.

29666161 is a deficient number, since it is larger than the sum of its proper divisors (4320143).

29666161 is an equidigital number, since it uses as much as digits as its factorization.

29666161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10271.

The product of its digits is 23328, while the sum is 37.

The square root of 29666161 is about 5446.6651264788. The cubic root of 29666161 is about 309.5663760454.

The spelling of 29666161 in words is "twenty-nine million, six hundred sixty-six thousand, one hundred sixty-one".

Divisors: 1 7 431 3017 9833 68831 4238023 29666161