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20185002230 = 256730126869
BaseRepresentation
bin10010110011000111…
…101011000011110110
31221002201122100121012
4102303013223003312
5312314330032410
613134534352222
71313126455001
oct226307530366
957081570535
1020185002230
1186189a8a28
123ab3abb672
131b98b10603
14d96ac2538
157d2111605
hex4b31eb0f6

20185002230 has 16 divisors (see below), whose sum is σ = 36875288880. Its totient is φ = 7953493152.

The previous prime is 20185002223. The next prime is 20185002287. The reversal of 20185002230 is 3220058102.

It is a junction number, because it is equal to n+sod(n) for n = 20185002196 and 20185002205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15062765 + ... + 15064104.

It is an arithmetic number, because the mean of its divisors is an integer number (2304705555).

Almost surely, 220185002230 is an apocalyptic number.

20185002230 is a deficient number, since it is larger than the sum of its proper divisors (16690286650).

20185002230 is a wasteful number, since it uses less digits than its factorization.

20185002230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30126943.

The product of its (nonzero) digits is 960, while the sum is 23.

The spelling of 20185002230 in words is "twenty billion, one hundred eighty-five million, two thousand, two hundred thirty".

Divisors: 1 2 5 10 67 134 335 670 30126869 60253738 150634345 301268690 2018500223 4037000446 10092501115 20185002230