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30793 = 75383
BaseRepresentation
bin111100001001001
31120020111
413201021
51441133
6354321
7155530
oct74111
946214
1030793
1121154
12159a1
1311029
14b317
1591cd
hex7849

30793 has 8 divisors (see below), whose sum is σ = 36288. Its totient is φ = 25584.

The previous prime is 30781. The next prime is 30803. The reversal of 30793 is 39703.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30793 is a prime.

30793 is a lucky number.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (30703) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 330 + ... + 412.

It is an arithmetic number, because the mean of its divisors is an integer number (4536).

230793 is an apocalyptic number.

It is an amenable number.

30793 is a deficient number, since it is larger than the sum of its proper divisors (5495).

30793 is an equidigital number, since it uses as much as digits as its factorization.

30793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143.

The product of its (nonzero) digits is 567, while the sum is 22.

The square root of 30793 is about 175.4793435137. The cubic root of 30793 is about 31.3437292600.

It can be divided in two parts, 307 and 93, that added together give a square (400 = 202).

The spelling of 30793 in words is "thirty thousand, seven hundred ninety-three".

Divisors: 1 7 53 83 371 581 4399 30793