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20676 = 2231723
BaseRepresentation
bin101000011000100
31001100210
411003010
51130201
6235420
7114165
oct50304
931323
1020676
1114597
12bb70
139546
14776c
1561d6
hex50c4

20676 has 12 divisors (see below), whose sum is σ = 48272. Its totient is φ = 6888.

The previous prime is 20663. The next prime is 20681. The reversal of 20676 is 67602.

It can be divided in two parts, 206 and 76, that added together give a palindrome (282).

It is a tau number, because it is divible by the number of its divisors (12).

It is a nialpdrome in base 12.

It is an unprimeable number.

20676 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 850 + ... + 873.

220676 is an apocalyptic number.

It is an amenable number.

20676 is an abundant number, since it is smaller than the sum of its proper divisors (27596).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24136).

20676 is a wasteful number, since it uses less digits than its factorization.

20676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730 (or 1728 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 20676 is about 143.7915157441. The cubic root of 20676 is about 27.4466182077.

The spelling of 20676 in words is "twenty thousand, six hundred seventy-six".

Divisors: 1 2 3 4 6 12 1723 3446 5169 6892 10338 20676