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19030285 = 519119927
BaseRepresentation
bin100100010011…
…0000100001101
31022210211122101
41020212010031
514332432120
61515515101
7320516611
oct110460415
938724571
1019030285
11a81880a
126458a91
133c33c31
142755341
151a0d90a
hex122610d

19030285 has 8 divisors (see below), whose sum is σ = 22957056. Its totient is φ = 15143760.

The previous prime is 19030283. The next prime is 19030289. The reversal of 19030285 is 58203091.

19030285 = 13752 + 13762 + ... + 13842.

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

It is not a de Polignac number, because 19030285 - 21 = 19030283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19030283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9009 + ... + 10918.

It is an arithmetic number, because the mean of its divisors is an integer number (2869632).

Almost surely, 219030285 is an apocalyptic number.

It is an amenable number.

19030285 is a deficient number, since it is larger than the sum of its proper divisors (3926771).

19030285 is a wasteful number, since it uses less digits than its factorization.

19030285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20123.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 19030285 is about 4362.3714880785. The cubic root of 19030285 is about 266.9818660037.

The spelling of 19030285 in words is "nineteen million, thirty thousand, two hundred eighty-five".

Divisors: 1 5 191 955 19927 99635 3806057 19030285