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30026 = 215013
BaseRepresentation
bin111010101001010
31112012002
413111022
51430101
6351002
7153353
oct72512
945162
1030026
1120617
1215462
1310889
158d6b
hex754a

30026 has 4 divisors (see below), whose sum is σ = 45042. Its totient is φ = 15012.

The previous prime is 30013. The next prime is 30029. The reversal of 30026 is 62003.

Adding to 30026 its reverse (62003), we get a palindrome (92029).

It is a happy number.

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., 22801 + 7225 = 151^2 + 85^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 29989 and 30016.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 30026.

It is not an unprimeable number, because it can be changed into a prime (30029) by changing a digit.

30026 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7505 + ... + 7508.

230026 is an apocalyptic number.

30026 is a deficient number, since it is larger than the sum of its proper divisors (15016).

30026 is a wasteful number, since it uses less digits than its factorization.

30026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15015.

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

The square root of 30026 is about 173.2801200369. The cubic root of 30026 is about 31.0812989171.

The spelling of 30026 in words is "thirty thousand, twenty-six".

Divisors: 1 2 15013 30026