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19008028 = 2213232691
BaseRepresentation
bin100100010000…
…0101000011100
31022202201010001
41020200220130
514331224103
61515224044
7320364664
oct110405034
938681101
1019008028
11a803016
126448024
133c26a70
14274b1a4
151a0701d
hex1220a1c

19008028 has 36 divisors (see below), whose sum is σ = 37502248. Its totient is φ = 8379360.

The previous prime is 19008013. The next prime is 19008043. The reversal of 19008028 is 82080091.

It is an interprime number because it is at equal distance from previous prime (19008013) and next prime (19008043).

It is a super-2 number, since 2×190080282 = 722610256897568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19007987 and 19008005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27163 + ... + 27853.

Almost surely, 219008028 is an apocalyptic number.

It is an amenable number.

19008028 is a deficient number, since it is larger than the sum of its proper divisors (18494220).

19008028 is a wasteful number, since it uses less digits than its factorization.

19008028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754 (or 729 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 19008028 is about 4359.8197210435. The cubic root of 19008028 is about 266.8777419109.

The spelling of 19008028 in words is "nineteen million, eight thousand, twenty-eight".

Divisors: 1 2 4 13 23 26 46 52 92 299 529 598 691 1058 1196 1382 2116 2764 6877 8983 13754 15893 17966 27508 31786 35932 63572 206609 365539 413218 731078 826436 1462156 4752007 9504014 19008028