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38871169 = 192045851
BaseRepresentation
bin1001010001001…
…0000010000001
32201010212012221
42110102002001
534422334134
63505051041
7651254011
oct224220201
981125187
1038871169
111aa3a537
1211026a81
13808cabc
14523bc41
15362c5b4
hex2512081

38871169 has 4 divisors (see below), whose sum is σ = 40917040. Its totient is φ = 36825300.

The previous prime is 38871149. The next prime is 38871187. The reversal of 38871169 is 96117883.

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 38871169 - 225 = 5316737 is a prime.

It is a super-2 number, since 2×388711692 = 3021935558853122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38871109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1022907 + ... + 1022944.

It is an arithmetic number, because the mean of its divisors is an integer number (10229260).

Almost surely, 238871169 is an apocalyptic number.

It is an amenable number.

38871169 is a deficient number, since it is larger than the sum of its proper divisors (2045871).

38871169 is a wasteful number, since it uses less digits than its factorization.

38871169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045870.

The product of its digits is 72576, while the sum is 43.

The square root of 38871169 is about 6234.6747308901. The cubic root of 38871169 is about 338.7473194143.

The spelling of 38871169 in words is "thirty-eight million, eight hundred seventy-one thousand, one hundred sixty-nine".

Divisors: 1 19 2045851 38871169