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18950712 = 23311233121
BaseRepresentation
bin100100001001…
…0101000111000
31022122210111020
41020102220320
514322410322
61514102440
7320035614
oct110225070
938583436
1018950712
11a773a50
12641aa20
133c06951
142734344
1519e505c
hex1212a38

18950712 has 64 divisors (see below), whose sum is σ = 53948160. Its totient is φ = 5491200.

The previous prime is 18950707. The next prime is 18950719. The reversal of 18950712 is 21705981.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18950719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4512 + ... + 7632.

It is an arithmetic number, because the mean of its divisors is an integer number (842940).

Almost surely, 218950712 is an apocalyptic number.

18950712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18950712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26974080).

18950712 is an abundant number, since it is smaller than the sum of its proper divisors (34997448).

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

18950712 is a wasteful number, since it uses less digits than its factorization.

18950712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3164 (or 3160 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 18950712 is about 4353.2415508446. The cubic root of 18950712 is about 266.6092279066.

The spelling of 18950712 in words is "eighteen million, nine hundred fifty thousand, seven hundred twelve".

Divisors: 1 2 3 4 6 8 11 12 22 23 24 33 44 46 66 69 88 92 132 138 184 253 264 276 506 552 759 1012 1518 2024 3036 3121 6072 6242 9363 12484 18726 24968 34331 37452 68662 71783 74904 102993 137324 143566 205986 215349 274648 287132 411972 430698 574264 789613 823944 861396 1579226 1722792 2368839 3158452 4737678 6316904 9475356 18950712