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13970186 = 247331449
BaseRepresentation
bin110101010010…
…101100001010
3222021202111022
4311102230022
512034021221
61215232442
7226513256
oct65225412
928252438
1013970186
11798200a
124818722
132b819a9
141bd9266
15135e4ab
hexd52b0a

13970186 has 16 divisors (see below), whose sum is σ = 21513600. Its totient is φ = 6800640.

The previous prime is 13970183. The next prime is 13970191. The reversal of 13970186 is 68107931.

It is not an unprimeable number, because it can be changed into a prime (13970183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30890 + ... + 31338.

It is an arithmetic number, because the mean of its divisors is an integer number (1344600).

Almost surely, 213970186 is an apocalyptic number.

13970186 is a deficient number, since it is larger than the sum of its proper divisors (7543414).

13970186 is a wasteful number, since it uses less digits than its factorization.

13970186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 13970186 is about 3737.6712000924. The cubic root of 13970186 is about 240.8430191571.

The spelling of 13970186 in words is "thirteen million, nine hundred seventy thousand, one hundred eighty-six".

Divisors: 1 2 47 94 331 449 662 898 15557 21103 31114 42206 148619 297238 6985093 13970186