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30390169 = 173674871
BaseRepresentation
bin111001111101…
…1011110011001
32010011222110211
41303323132121
530234441134
63003211121
7516212035
oct163733631
963158424
1030390169
1116177647
12a216aa1
1363b0764
1440711c5
152a04764
hex1cfb799

30390169 has 8 divisors (see below), whose sum is σ = 32272128. Its totient is φ = 28518720.

The previous prime is 30390167. The next prime is 30390179. The reversal of 30390169 is 96109303.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30390169 - 21 = 30390167 is a prime.

It is a super-2 number, since 2×303901692 = 1847124743697122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30390169.

It is not an unprimeable number, because it can be changed into a prime (30390161) 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 7 ways as a sum of consecutive naturals, for example, 3804 + ... + 8674.

It is an arithmetic number, because the mean of its divisors is an integer number (4034016).

Almost surely, 230390169 is an apocalyptic number.

It is an amenable number.

30390169 is a deficient number, since it is larger than the sum of its proper divisors (1881959).

30390169 is a wasteful number, since it uses less digits than its factorization.

30390169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5255.

The product of its (nonzero) digits is 4374, while the sum is 31.

The square root of 30390169 is about 5512.7279091209. The cubic root of 30390169 is about 312.0645035657.

The spelling of 30390169 in words is "thirty million, three hundred ninety thousand, one hundred sixty-nine".

Divisors: 1 17 367 4871 6239 82807 1787657 30390169