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30068 = 227517
BaseRepresentation
bin111010101110100
31112020122
413111310
51430233
6351112
7153443
oct72564
945218
1030068
1120655
1215498
13108bc
14ad5a
158d98
hex7574

30068 has 6 divisors (see below), whose sum is σ = 52626. Its totient is φ = 15032.

The previous prime is 30059. The next prime is 30071. The reversal of 30068 is 86003.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 29584 + 484 = 172^2 + 22^2 .

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

30068 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, 3755 + ... + 3762.

It is an arithmetic number, because the mean of its divisors is an integer number (8771).

230068 is an apocalyptic number.

It is an amenable number.

30068 is a deficient number, since it is larger than the sum of its proper divisors (22558).

30068 is a wasteful number, since it uses less digits than its factorization.

30068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7521 (or 7519 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 30068 is about 173.4012687381. The cubic root of 30068 is about 31.0957842116.

The spelling of 30068 in words is "thirty thousand, sixty-eight".

Divisors: 1 2 4 7517 15034 30068