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30173668 = 2279771103
BaseRepresentation
bin111001100011…
…0100111100100
32002202222111021
41303012213210
530211024133
62554420524
7514320610
oct163064744
962688437
1030173668
1116039a18
12a131744
136336055
144016340
1529b052d
hex1cc69e4

30173668 has 24 divisors (see below), whose sum is σ = 60463872. Its totient is φ = 12906624.

The previous prime is 30173641. The next prime is 30173669. The reversal of 30173668 is 86637103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30173669) 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, 26805 + ... + 27907.

It is an arithmetic number, because the mean of its divisors is an integer number (2519328).

Almost surely, 230173668 is an apocalyptic number.

It is an amenable number.

30173668 is an abundant number, since it is smaller than the sum of its proper divisors (30290204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30173668 is a wasteful number, since it uses less digits than its factorization.

30173668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091 (or 2089 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 30173668 is about 5493.0563441494. The cubic root of 30173668 is about 311.3216827097.

The spelling of 30173668 in words is "thirty million, one hundred seventy-three thousand, six hundred sixty-eight".

Divisors: 1 2 4 7 14 28 977 1103 1954 2206 3908 4412 6839 7721 13678 15442 27356 30884 1077631 2155262 4310524 7543417 15086834 30173668