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20500026246 = 2327431377491
BaseRepresentation
bin10011000101111001…
…011001001110000110
31221220200102020022100
4103011321121032012
5313441001314441
613230110412530
71324003230240
oct230571311606
957820366270
1020500026246
11876a804157
123b81501146
131c1916b95b
14dc6887090
157eeadbcb6
hex4c5e59386

20500026246 has 48 divisors (see below), whose sum is σ = 50879881728. Its totient is φ = 5843545200.

The previous prime is 20500026233. The next prime is 20500026343. The reversal of 20500026246 is 64262000502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 134440 + ... + 243051.

It is an arithmetic number, because the mean of its divisors is an integer number (1059997536).

Almost surely, 220500026246 is an apocalyptic number.

20500026246 is an abundant number, since it is smaller than the sum of its proper divisors (30379855482).

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

20500026246 is a wasteful number, since it uses less digits than its factorization.

20500026246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377937 (or 377934 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 20500026246 its reverse (64262000502), we get a palindrome (84762026748).

The spelling of 20500026246 in words is "twenty billion, five hundred million, twenty-six thousand, two hundred forty-six".

Divisors: 1 2 3 6 7 9 14 18 21 42 63 126 431 862 1293 2586 3017 3879 6034 7758 9051 18102 27153 54306 377491 754982 1132473 2264946 2642437 3397419 5284874 6794838 7927311 15854622 23781933 47563866 162698621 325397242 488095863 976191726 1138890347 1464287589 2277780694 2928575178 3416671041 6833342082 10250013123 20500026246