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30819241 = 2310113267
BaseRepresentation
bin111010110010…
…0001110101001
32010222210001101
41311210032221
530342203431
63020321401
7522650005
oct165441651
963883041
1030819241
111643aa52
12a3a3261
136500b4b
144143705
152a8b961
hex1d643a9

30819241 has 8 divisors (see below), whose sum is σ = 32480064. Its totient is φ = 29185200.

The previous prime is 30819227. The next prime is 30819247. The reversal of 30819241 is 14291803.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 30819241 - 25 = 30819209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30819247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4311 + ... + 8956.

It is an arithmetic number, because the mean of its divisors is an integer number (4060008).

Almost surely, 230819241 is an apocalyptic number.

It is an amenable number.

30819241 is a deficient number, since it is larger than the sum of its proper divisors (1660823).

30819241 is a wasteful number, since it uses less digits than its factorization.

30819241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13391.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 30819241 is about 5551.5079933294. The cubic root of 30819241 is about 313.5263017122.

The spelling of 30819241 in words is "thirty million, eight hundred nineteen thousand, two hundred forty-one".

Divisors: 1 23 101 2323 13267 305141 1339967 30819241