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30245565 = 357288053
BaseRepresentation
bin111001101100…
…0001010111101
32002220122010010
41303120022331
530220324230
63000133433
7515040330
oct163301275
962818103
1030245565
1116088a39
12a167279
13635c9ac
144034617
1529c69b0
hex1cd82bd

30245565 has 16 divisors (see below), whose sum is σ = 55306368. Its totient is φ = 13826496.

The previous prime is 30245557. The next prime is 30245573. The reversal of 30245565 is 56554203.

It is an interprime number because it is at equal distance from previous prime (30245557) and next prime (30245573).

It is not a de Polignac number, because 30245565 - 23 = 30245557 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143922 + ... + 144131.

It is an arithmetic number, because the mean of its divisors is an integer number (3456648).

Almost surely, 230245565 is an apocalyptic number.

30245565 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30245565 is a deficient number, since it is larger than the sum of its proper divisors (25060803).

30245565 is a wasteful number, since it uses less digits than its factorization.

30245565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288068.

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 30245565 is about 5499.5968034030. The cubic root of 30245565 is about 311.5687562019.

Adding to 30245565 its reverse (56554203), we get a palindrome (86799768).

The spelling of 30245565 in words is "thirty million, two hundred forty-five thousand, five hundred sixty-five".

Divisors: 1 3 5 7 15 21 35 105 288053 864159 1440265 2016371 4320795 6049113 10081855 30245565