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29750161 = 74250023
BaseRepresentation
bin111000101111…
…1001110010001
32001222110112211
41301133032101
530104001121
62541352121
7510605110
oct161371621
961873484
1029750161
111587a811
129b68641
13621835c
143d45c77
152929ce1
hex1c5f391

29750161 has 4 divisors (see below), whose sum is σ = 34000192. Its totient is φ = 25500132.

The previous prime is 29750141. The next prime is 29750167. The reversal of 29750161 is 16105792.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 29750161 - 25 = 29750129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29750167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2125005 + ... + 2125018.

It is an arithmetic number, because the mean of its divisors is an integer number (8500048).

Almost surely, 229750161 is an apocalyptic number.

It is an amenable number.

29750161 is a deficient number, since it is larger than the sum of its proper divisors (4250031).

29750161 is an equidigital number, since it uses as much as digits as its factorization.

29750161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4250030.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 29750161 is about 5454.3708161437. The cubic root of 29750161 is about 309.8582806951.

The spelling of 29750161 in words is "twenty-nine million, seven hundred fifty thousand, one hundred sixty-one".

Divisors: 1 7 4250023 29750161