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19317950 = 2521722727
BaseRepresentation
bin100100110110…
…0010010111110
31100100110020122
41021230102332
514421133300
61530014542
7323125361
oct111542276
940313218
1019317950
11a9a4953
126577452
134004b52
1427cc0d8
151a68c85
hex126c4be

19317950 has 24 divisors (see below), whose sum is σ = 38046672. Its totient is φ = 7272320.

The previous prime is 19317941. The next prime is 19317983. The reversal of 19317950 is 5971391.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 19317950.

It is a congruent number.

It is an unprimeable number.

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, 10514 + ... + 12213.

It is an arithmetic number, because the mean of its divisors is an integer number (1585278).

Almost surely, 219317950 is an apocalyptic number.

19317950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19317950 is a deficient number, since it is larger than the sum of its proper divisors (18728722).

19317950 is a wasteful number, since it uses less digits than its factorization.

19317950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22756 (or 22751 counting only the distinct ones).

The product of its (nonzero) digits is 8505, while the sum is 35.

The square root of 19317950 is about 4395.2189934064. The cubic root of 19317950 is about 268.3203916789.

The spelling of 19317950 in words is "nineteen million, three hundred seventeen thousand, nine hundred fifty".

Divisors: 1 2 5 10 17 25 34 50 85 170 425 850 22727 45454 113635 227270 386359 568175 772718 1136350 1931795 3863590 9658975 19317950