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1993182208 = 2102384629
BaseRepresentation
bin111011011001101…
…1000110000000000
312010220112010222021
41312303120300000
513040223312313
6525440451224
7100251524563
oct16663306000
95126463867
101993182208
11933110326
12477619b14
13259c2b074
1414ca024da
15b9eb778d
hex76cd8c00

1993182208 has 44 divisors (see below), whose sum is σ = 4157702640. Its totient is φ = 953249792.

The previous prime is 1993182203. The next prime is 1993182223. The reversal of 1993182208 is 8022813991.

It is not an unprimeable number, because it can be changed into a prime (1993182203) by changing a digit.

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, 18763 + ... + 65866.

Almost surely, 21993182208 is an apocalyptic number.

It is an amenable number.

1993182208 is an abundant number, since it is smaller than the sum of its proper divisors (2164520432).

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

1993182208 is an equidigital number, since it uses as much as digits as its factorization.

1993182208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84672 (or 84654 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 1993182208 is about 44645.0692462225. The cubic root of 1993182208 is about 1258.4877734198.

The spelling of 1993182208 in words is "one billion, nine hundred ninety-three million, one hundred eighty-two thousand, two hundred eight".

Divisors: 1 2 4 8 16 23 32 46 64 92 128 184 256 368 512 736 1024 1472 2944 5888 11776 23552 84629 169258 338516 677032 1354064 1946467 2708128 3892934 5416256 7785868 10832512 15571736 21665024 31143472 43330048 62286944 86660096 124573888 249147776 498295552 996591104 1993182208