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19768230 = 2325219647
BaseRepresentation
bin100101101101…
…0001110100110
31101012022220200
41023122032212
520030040410
61543411330
7330012216
oct113321646
941168820
1019768230
1110182189
126753b46
134131aa1
1428a8246
151b073c0
hex12da3a6

19768230 has 24 divisors (see below), whose sum is σ = 51397632. Its totient is φ = 5271504.

The previous prime is 19768219. The next prime is 19768237. The reversal of 19768230 is 3286791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19768237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109734 + ... + 109913.

It is an arithmetic number, because the mean of its divisors is an integer number (2141568).

Almost surely, 219768230 is an apocalyptic number.

19768230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19768230 is an abundant number, since it is smaller than the sum of its proper divisors (31629402).

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

19768230 is a wasteful number, since it uses less digits than its factorization.

19768230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219660 (or 219657 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 19768230 is about 4446.1477708236. The cubic root of 19768230 is about 270.3891507820.

The spelling of 19768230 in words is "nineteen million, seven hundred sixty-eight thousand, two hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 219647 439294 658941 1098235 1317882 1976823 2196470 3294705 3953646 6589410 9884115 19768230