Search a number
-
+
30974 = 217911
BaseRepresentation
bin111100011111110
31120111012
413203332
51442344
6355222
7156206
oct74376
946435
1030974
11212a9
1215b12
1311138
14b406
15929e
hex78fe

30974 has 8 divisors (see below), whose sum is σ = 49248. Its totient is φ = 14560.

The previous prime is 30971. The next prime is 30977. The reversal of 30974 is 47903.

It is an interprime number because it is at equal distance from previous prime (30971) and next prime (30977).

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

It is a Curzon number.

It is a plaindrome in base 13.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 30974.

It is not an unprimeable number, because it can be changed into a prime (30971) 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 in 3 ways as a sum of consecutive naturals, for example, 422 + ... + 489.

It is an arithmetic number, because the mean of its divisors is an integer number (6156).

230974 is an apocalyptic number.

30974 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

30974 is a deficient number, since it is larger than the sum of its proper divisors (18274).

30974 is a wasteful number, since it uses less digits than its factorization.

30974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 30974 is about 175.9943180901. The cubic root of 30974 is about 31.4050217130.

It can be divided in two parts, 309 and 74, that added together give a palindrome (383).

The spelling of 30974 in words is "thirty thousand, nine hundred seventy-four".

Divisors: 1 2 17 34 911 1822 15487 30974