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30334939 = 33898951
BaseRepresentation
bin111001110110…
…1111111011011
32010002011201021
41303231333123
530231204224
63002103311
7515562025
oct163557733
963064637
1030334939
111613a0a8
12a1aab37
13639158b
144059015
1529e31e4
hex1cedfdb

30334939 has 4 divisors (see below), whose sum is σ = 30347280. Its totient is φ = 30322600.

The previous prime is 30334937. The next prime is 30334949. The reversal of 30334939 is 93943303.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 93943303 = 661142123.

It is a cyclic number.

It is not a de Polignac number, because 30334939 - 21 = 30334937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30334933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1087 + ... + 7864.

It is an arithmetic number, because the mean of its divisors is an integer number (7586820).

Almost surely, 230334939 is an apocalyptic number.

30334939 is a deficient number, since it is larger than the sum of its proper divisors (12341).

30334939 is an equidigital number, since it uses as much as digits as its factorization.

30334939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12340.

The product of its (nonzero) digits is 26244, while the sum is 34.

The square root of 30334939 is about 5507.7163144084. The cubic root of 30334939 is about 311.8753439942.

The spelling of 30334939 in words is "thirty million, three hundred thirty-four thousand, nine hundred thirty-nine".

Divisors: 1 3389 8951 30334939