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20602 = 210301
BaseRepresentation
bin101000001111010
31001021001
411001322
51124402
6235214
7114031
oct50172
931231
1020602
111452a
12bb0a
1394ba
147718
156187
hex507a

20602 has 4 divisors (see below), whose sum is σ = 30906. Its totient is φ = 10300.

The previous prime is 20599. The next prime is 20611.

It is a happy number.

20602 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12321 + 8281 = 111^2 + 91^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5149 + ... + 5152.

220602 is an apocalyptic number.

20602 is a deficient number, since it is larger than the sum of its proper divisors (10304).

20602 is a wasteful number, since it uses less digits than its factorization.

20602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10303.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 20602 is about 143.5339681051. The cubic root of 20602 is about 27.4138349866.

The spelling of 20602 in words is "twenty thousand, six hundred two".

Divisors: 1 2 10301 20602