Search a number
30202 = 215101
BaseRepresentation
bin111010111111010
31112102121
413113322
51431302
6351454
7154024
oct72772
945377
1030202
1120767
121558a
1310993
14b014
158e37
hex75fa

30202 has 4 divisors (see below), whose sum is σ = 45306. Its totient is φ = 15100.

The previous prime is 30197. The next prime is 30203. The reversal of 30202 is 20203.

Adding to 30202 its reverse (20203), we get a palindrome (50405).

Subtracting from 30202 its reverse (20203), we obtain a palindrome (9999).

It can be divided in two parts, 30 and 202, that added together give a palindrome (232).

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20203 = 89227.

It can be written as a sum of positive squares in only one way, i.e., 29241 + 961 = 171^2 + 31^2 .

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (30203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7549 + ... + 7552.

230202 is an apocalyptic number.

30202 is a deficient number, since it is larger than the sum of its proper divisors (15104).

30202 is a wasteful number, since it uses less digits than its factorization.

30202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15103.

The product of its (nonzero) digits is 12, while the sum is 7.

The square root of 30202 is about 173.7872262279. The cubic root of 30202 is about 31.1419092220.

The spelling of 30202 in words is "thirty thousand, two hundred two".

Divisors: 1 2 15101 30202