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19143292 = 22717131307
BaseRepresentation
bin100100100000…
…1101001111100
31100000120122211
41021001221330
514400041132
61522150204
7321500230
oct111015174
940016584
1019143292
11a895703
1264b2364
133c734bc
1427845c0
151a32147
hex1241a7c

19143292 has 48 divisors (see below), whose sum is σ = 40981248. Its totient is φ = 7637760.

The previous prime is 19143287. The next prime is 19143329. The reversal of 19143292 is 29234191.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 62203 + ... + 62509.

It is an arithmetic number, because the mean of its divisors is an integer number (853776).

Almost surely, 219143292 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19143292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20490624).

19143292 is an abundant number, since it is smaller than the sum of its proper divisors (21837956).

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

19143292 is a wasteful number, since it uses less digits than its factorization.

19143292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466 (or 464 counting only the distinct ones).

The product of its digits is 3888, while the sum is 31.

The square root of 19143292 is about 4375.3047893832. The cubic root of 19143292 is about 267.5092936475.

The spelling of 19143292 in words is "nineteen million, one hundred forty-three thousand, two hundred ninety-two".

Divisors: 1 2 4 7 14 17 28 34 68 119 131 238 262 307 476 524 614 917 1228 1834 2149 2227 3668 4298 4454 5219 8596 8908 10438 15589 20876 31178 36533 40217 62356 73066 80434 146132 160868 281519 563038 683689 1126076 1367378 2734756 4785823 9571646 19143292