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30351669 = 353190891
BaseRepresentation
bin111001111001…
…0000100110101
32010010000122220
41303302010311
530232223134
63002312553
7515661555
oct163620465
963100586
1030351669
1116150727
12a1b8759
13639908a
144061165
1529e8149
hex1cf2135

30351669 has 8 divisors (see below), whose sum is σ = 41232672. Its totient is φ = 19852560.

The previous prime is 30351667. The next prime is 30351677. The reversal of 30351669 is 96615303.

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

It is not a de Polignac number, because 30351669 - 21 = 30351667 is a prime.

It is a super-2 number, since 2×303516692 = 1842447622171122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30351667) 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, 95287 + ... + 95604.

It is an arithmetic number, because the mean of its divisors is an integer number (5154084).

Almost surely, 230351669 is an apocalyptic number.

It is an amenable number.

30351669 is a deficient number, since it is larger than the sum of its proper divisors (10881003).

30351669 is a wasteful number, since it uses less digits than its factorization.

30351669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190947.

The product of its (nonzero) digits is 14580, while the sum is 33.

The square root of 30351669 is about 5509.2348833572. The cubic root of 30351669 is about 311.9326675049.

The spelling of 30351669 in words is "thirty million, three hundred fifty-one thousand, six hundred sixty-nine".

Divisors: 1 3 53 159 190891 572673 10117223 30351669