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30678343 = 231333841
BaseRepresentation
bin111010100000…
…1110101000111
32010201121202221
41311001311013
530323201333
63013313211
7521522143
oct165016507
963647687
1030678343
1116354103
12a335807
136481987
144108223
152a5ed2d
hex1d41d47

30678343 has 4 divisors (see below), whose sum is σ = 32012208. Its totient is φ = 29344480.

The previous prime is 30678341. The next prime is 30678359. The reversal of 30678343 is 34387603.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30678343 - 21 = 30678341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30678299 and 30678308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30678341) 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 3 ways as a sum of consecutive naturals, for example, 666898 + ... + 666943.

It is an arithmetic number, because the mean of its divisors is an integer number (8003052).

Almost surely, 230678343 is an apocalyptic number.

30678343 is a deficient number, since it is larger than the sum of its proper divisors (1333865).

30678343 is a wasteful number, since it uses less digits than its factorization.

30678343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333864.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 30678343 is about 5538.8033906251. The cubic root of 30678343 is about 313.0477833326.

The spelling of 30678343 in words is "thirty million, six hundred seventy-eight thousand, three hundred forty-three".

Divisors: 1 23 1333841 30678343