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8214386 = 217323741
BaseRepresentation
bin11111010101011101110010
3120110100000112
4133111131302
54100330021
6452021322
7126551435
oct37253562
916410015
108214386
114700654
122901842
131917bab
14113b81c
15ac3d5b
hex7d5772

8214386 has 8 divisors (see below), whose sum is σ = 12393324. Its totient is φ = 4083280.

The previous prime is 8214379. The next prime is 8214389. The reversal of 8214386 is 6834128.

It can be written as a sum of positive squares in 2 ways, for example, as 5593225 + 2621161 = 2365^2 + 1619^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×82143863 (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (8214389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11525 + ... + 12216.

Almost surely, 28214386 is an apocalyptic number.

8214386 is a deficient number, since it is larger than the sum of its proper divisors (4178938).

8214386 is a wasteful number, since it uses less digits than its factorization.

8214386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23916.

The product of its digits is 9216, while the sum is 32.

The square root of 8214386 is about 2866.0750164642. The cubic root of 8214386 is about 201.7708246258.

The spelling of 8214386 in words is "eight million, two hundred fourteen thousand, three hundred eighty-six".

Divisors: 1 2 173 346 23741 47482 4107193 8214386