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19028012 = 2213136313
BaseRepresentation
bin100100010010…
…1100000101100
31022210201112012
41020211200230
514332344022
61515500352
7320510153
oct110454054
938721465
1019028012
11a817033
1264576b8
133c32ba3
14275459a
151a0cde2
hex122582c

19028012 has 12 divisors (see below), whose sum is σ = 33554136. Its totient is φ = 9441120.

The previous prime is 19028011. The next prime is 19028039. The reversal of 19028012 is 21082091.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (19028011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17633 + ... + 18680.

It is an arithmetic number, because the mean of its divisors is an integer number (2796178).

Almost surely, 219028012 is an apocalyptic number.

It is an amenable number.

19028012 is a deficient number, since it is larger than the sum of its proper divisors (14526124).

19028012 is a wasteful number, since it uses less digits than its factorization.

19028012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36448 (or 36446 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 19028012 is about 4362.1109568648. The cubic root of 19028012 is about 266.9712360360.

The spelling of 19028012 in words is "nineteen million, twenty-eight thousand, twelve".

Divisors: 1 2 4 131 262 524 36313 72626 145252 4757003 9514006 19028012