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1428206 = 213163337
BaseRepresentation
bin101011100101011101110
32200120010112
411130223232
5331200311
650340022
715065603
oct5345356
92616115
101428206
1189603a
1258a612
133b00c0
142926aa
151d328b
hex15caee

1428206 has 16 divisors (see below), whose sum is σ = 2328144. Its totient is φ = 653184.

The previous prime is 1428199. The next prime is 1428209. The reversal of 1428206 is 6028241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428209) 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 7 ways as a sum of consecutive naturals, for example, 4070 + ... + 4406.

It is an arithmetic number, because the mean of its divisors is an integer number (145509).

21428206 is an apocalyptic number.

1428206 is a deficient number, since it is larger than the sum of its proper divisors (899938).

1428206 is a wasteful number, since it uses less digits than its factorization.

1428206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1428206 is about 1195.0757298180. The cubic root of 1428206 is about 112.6151840852.

The spelling of 1428206 in words is "one million, four hundred twenty-eight thousand, two hundred six".

Divisors: 1 2 13 26 163 326 337 674 2119 4238 4381 8762 54931 109862 714103 1428206