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19015030 = 254344221
BaseRepresentation
bin100100010001…
…0010101110110
31022210001201101
41020202111312
514331440110
61515320314
7320424256
oct110422566
938701641
1019015030
11a808301
12645009a
133c29cc8
14274d966
151a0913a
hex1222576

19015030 has 16 divisors (see below), whose sum is σ = 35023824. Its totient is φ = 7428960.

The previous prime is 19015013. The next prime is 19015037. The reversal of 19015030 is 3051091.

It is a junction number, because it is equal to n+sod(n) for n = 19014989 and 19015007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19015037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21681 + ... + 22540.

It is an arithmetic number, because the mean of its divisors is an integer number (2188989).

Almost surely, 219015030 is an apocalyptic number.

19015030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19015030 is a deficient number, since it is larger than the sum of its proper divisors (16008794).

19015030 is a wasteful number, since it uses less digits than its factorization.

19015030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44271.

The product of its (nonzero) digits is 135, while the sum is 19.

The square root of 19015030 is about 4360.6226619601. The cubic root of 19015030 is about 266.9105078653.

The spelling of 19015030 in words is "nineteen million, fifteen thousand, thirty".

Divisors: 1 2 5 10 43 86 215 430 44221 88442 221105 442210 1901503 3803006 9507515 19015030