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20625000210 = 2325527943411
BaseRepresentation
bin10011001101010110…
…001000011100010010
31222020101120120100200
4103031112020130102
5314220000001320
613250333200030
71330051415643
oct231526103422
958211516320
1020625000210
118824302a21
123bb7330016
131c39017849
14dd92d96ca
1580aa76290
hex4cd588712

20625000210 has 48 divisors (see below), whose sum is σ = 53636394240. Its totient is φ = 5498831520.

The previous prime is 20625000203. The next prime is 20625000229. The reversal of 20625000210 is 1200052602.

20625000210 is a `hidden beast` number, since 20 + 625 + 0 + 0 + 0 + 21 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 453405 + ... + 496815.

It is an arithmetic number, because the mean of its divisors is an integer number (1117424880).

Almost surely, 220625000210 is an apocalyptic number.

20625000210 is an abundant number, since it is smaller than the sum of its proper divisors (33011394030).

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

20625000210 is a wasteful number, since it uses less digits than its factorization.

20625000210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48703 (or 48700 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 20625000210 its reverse (1200052602), we get a palindrome (21825052812).

The spelling of 20625000210 in words is "twenty billion, six hundred twenty-five million, two hundred ten", and thus it is an aban number.

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 5279 10558 15837 26395 31674 43411 47511 52790 79185 86822 95022 130233 158370 217055 237555 260466 390699 434110 475110 651165 781398 1302330 1953495 3906990 229166669 458333338 687500007 1145833345 1375000014 2062500021 2291666690 3437500035 4125000042 6875000070 10312500105 20625000210