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19230216 = 2331097351
BaseRepresentation
bin100100101011…
…0111000001000
31100011222220020
41021112320020
514410331331
61524100440
7322311525
oct111267010
940158806
1019230216
11a944a45
126534720
133ca3c35
1427a814c
151a4cc96
hex1256e08

19230216 has 32 divisors (see below), whose sum is σ = 48523200. Its totient is φ = 6350400.

The previous prime is 19230181. The next prime is 19230287. The reversal of 19230216 is 61203291.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1060 + ... + 6291.

It is an arithmetic number, because the mean of its divisors is an integer number (1516350).

Almost surely, 219230216 is an apocalyptic number.

It is an amenable number.

19230216 is an abundant number, since it is smaller than the sum of its proper divisors (29292984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19230216 is a wasteful number, since it uses less digits than its factorization.

19230216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7469 (or 7465 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 19230216 is about 4385.2270180687. The cubic root of 19230216 is about 267.9135757567.

The spelling of 19230216 in words is "nineteen million, two hundred thirty thousand, two hundred sixteen".

Divisors: 1 2 3 4 6 8 12 24 109 218 327 436 654 872 1308 2616 7351 14702 22053 29404 44106 58808 88212 176424 801259 1602518 2403777 3205036 4807554 6410072 9615108 19230216