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20319192 = 23322411171
BaseRepresentation
bin100110110000…
…0101111011000
31102020022200200
41031200233120
520200203232
62003302200
7334465425
oct115405730
942208620
1020319192
1110519123
12697a960
1342957ba
1429acd4c
151bb577c
hex1360bd8

20319192 has 48 divisors (see below), whose sum is σ = 55306680. Its totient is φ = 6739200.

The previous prime is 20319163. The next prime is 20319197. The reversal of 20319192 is 29191302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20319197) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16767 + ... + 17937.

Almost surely, 220319192 is an apocalyptic number.

It is an amenable number.

20319192 is an abundant number, since it is smaller than the sum of its proper divisors (34987488).

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

20319192 is a wasteful number, since it uses less digits than its factorization.

20319192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424 (or 1417 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 20319192 is about 4507.6814439355. The cubic root of 20319192 is about 272.8781809674.

The spelling of 20319192 in words is "twenty million, three hundred nineteen thousand, one hundred ninety-two".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 241 482 723 964 1171 1446 1928 2169 2342 2892 3513 4338 4684 5784 7026 8676 9368 10539 14052 17352 21078 28104 42156 84312 282211 564422 846633 1128844 1693266 2257688 2539899 3386532 5079798 6773064 10159596 20319192