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30027 = 310009
BaseRepresentation
bin111010101001011
31112012010
413111023
51430102
6351003
7153354
oct72513
945163
1030027
1120618
1215463
131088a
14ad2b
158d6c
hex754b

30027 has 4 divisors (see below), whose sum is σ = 40040. Its totient is φ = 20016.

The previous prime is 30013. The next prime is 30029. The reversal of 30027 is 72003.

It can be divided in two parts, 300 and 27, that multiplied together give a square (8100 = 902).

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72003 = 324001.

It is not a de Polignac number, because 30027 - 24 = 30011 is a prime.

It is a D-number.

It is a Duffinian number.

30027 is a modest number, since divided by 27 gives 3 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 29994 and 30021.

It is not an unprimeable number, because it can be changed into a prime (30029) 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, 5002 + ... + 5007.

It is an arithmetic number, because the mean of its divisors is an integer number (10010).

230027 is an apocalyptic number.

30027 is a deficient number, since it is larger than the sum of its proper divisors (10013).

30027 is a wasteful number, since it uses less digits than its factorization.

30027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10012.

The product of its (nonzero) digits is 42, while the sum is 12.

The square root of 30027 is about 173.2830055141. The cubic root of 30027 is about 31.0816439619.

The spelling of 30027 in words is "thirty thousand, twenty-seven".

Divisors: 1 3 10009 30027