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30169071 = 334127253
BaseRepresentation
bin111001100010…
…1011111101111
32002202202012000
41303011133233
530210402241
62554343343
7514301322
oct163053757
962682160
1030169071
1116036519
12a12ab53
136333c2a
1440147b9
1529adeb6
hex1cc57ef

30169071 has 16 divisors (see below), whose sum is σ = 45786720. Its totient is φ = 19621440.

The previous prime is 30169049. The next prime is 30169081. The reversal of 30169071 is 17096103.

It is not a de Polignac number, because 30169071 - 25 = 30169039 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30169081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12520 + ... + 14733.

It is an arithmetic number, because the mean of its divisors is an integer number (2861670).

Almost surely, 230169071 is an apocalyptic number.

30169071 is a deficient number, since it is larger than the sum of its proper divisors (15617649).

30169071 is a wasteful number, since it uses less digits than its factorization.

30169071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27303 (or 27297 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 30169071 is about 5492.6378908499. The cubic root of 30169071 is about 311.3058718106.

The spelling of 30169071 in words is "thirty million, one hundred sixty-nine thousand, seventy-one".

Divisors: 1 3 9 27 41 123 369 1107 27253 81759 245277 735831 1117373 3352119 10056357 30169071