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19999708 = 2241911933
BaseRepresentation
bin100110001001…
…0101111011100
31101122002102221
41030102233130
520104442313
61552355124
7331665121
oct114225734
941562387
1019999708
1110320093
126845aa4
1341b3261
142928748
151b50c8d
hex1312bdc

19999708 has 12 divisors (see below), whose sum is σ = 35085960. Its totient is φ = 9975152.

The previous prime is 19999697. The next prime is 19999729. The reversal of 19999708 is 80799991.

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 3 ways as a sum of consecutive naturals, for example, 4291 + ... + 7642.

It is an arithmetic number, because the mean of its divisors is an integer number (2923830).

Almost surely, 219999708 is an apocalyptic number.

It is an amenable number.

19999708 is a deficient number, since it is larger than the sum of its proper divisors (15086252).

19999708 is a wasteful number, since it uses less digits than its factorization.

19999708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12356 (or 12354 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 52.

The square root of 19999708 is about 4472.1033082879. The cubic root of 19999708 is about 271.4404406365.

The spelling of 19999708 in words is "nineteen million, nine hundred ninety-nine thousand, seven hundred eight".

Divisors: 1 2 4 419 838 1676 11933 23866 47732 4999927 9999854 19999708