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74108161 = 624711863
BaseRepresentation
bin1000110101011…
…00110100000001
312011110002021201
410122230310001
5122432430121
611204221201
71556623531
oct432546401
9164402251
1074108161
1138917616
122099a801
13124796aa
149bb14c1
15678ce91
hex46acd01

74108161 has 4 divisors (see below), whose sum is σ = 74126272. Its totient is φ = 74090052.

The previous prime is 74108147. The next prime is 74108173. The reversal of 74108161 is 16180147.

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 a cyclic number.

It is not a de Polignac number, because 74108161 - 25 = 74108129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74108101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 316 + ... + 12178.

It is an arithmetic number, because the mean of its divisors is an integer number (18531568).

Almost surely, 274108161 is an apocalyptic number.

It is an amenable number.

74108161 is a deficient number, since it is larger than the sum of its proper divisors (18111).

74108161 is a wasteful number, since it uses less digits than its factorization.

74108161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18110.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 74108161 is about 8608.6097019205. The cubic root of 74108161 is about 420.0380936726.

The spelling of 74108161 in words is "seventy-four million, one hundred eight thousand, one hundred sixty-one".

Divisors: 1 6247 11863 74108161