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30206 = 2111373
BaseRepresentation
bin111010111111110
31112102202
413113332
51431311
6351502
7154031
oct72776
945382
1030206
1120770
1215592
1310997
14b018
158e3b
hex75fe

30206 has 8 divisors (see below), whose sum is σ = 49464. Its totient is φ = 13720.

The previous prime is 30203. The next prime is 30211. The reversal of 30206 is 60203.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (11).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30203) 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, 665 + ... + 708.

It is an arithmetic number, because the mean of its divisors is an integer number (6183).

230206 is an apocalyptic number.

30206 is a deficient number, since it is larger than the sum of its proper divisors (19258).

30206 is a wasteful number, since it uses less digits than its factorization.

30206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 30206 is about 173.7987341726. The cubic root of 30206 is about 31.1432839890.

Adding to 30206 its reverse (60203), we get a palindrome (90409).

The spelling of 30206 in words is "thirty thousand, two hundred six".

Divisors: 1 2 11 22 1373 2746 15103 30206