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30010855 = 57857453
BaseRepresentation
bin111001001111…
…0110111100111
32002110201011011
41302132313213
530140321410
62551123051
7513042130
oct162366747
962421134
1030010855
1115a38666
12a073487
1362a9c04
143db2c87
15297c18a
hex1c9ede7

30010855 has 8 divisors (see below), whose sum is σ = 41157792. Its totient is φ = 20578848.

The previous prime is 30010847. The next prime is 30010867. The reversal of 30010855 is 55801003.

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 30010855 - 23 = 30010847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 428692 + ... + 428761.

It is an arithmetic number, because the mean of its divisors is an integer number (5144724).

Almost surely, 230010855 is an apocalyptic number.

30010855 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

30010855 is a deficient number, since it is larger than the sum of its proper divisors (11146937).

30010855 is an equidigital number, since it uses as much as digits as its factorization.

30010855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857465.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 30010855 is about 5478.2164068244. The cubic root of 30010855 is about 310.7607227527.

Adding to 30010855 its reverse (55801003), we get a palindrome (85811858).

The spelling of 30010855 in words is "thirty million, ten thousand, eight hundred fifty-five".

Divisors: 1 5 7 35 857453 4287265 6002171 30010855