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30822833 = 139221747
BaseRepresentation
bin111010110010…
…1000110110001
32010222221222102
41311211012301
530342312313
63020350145
7522663326
oct165450661
963887872
1030822833
1116442718
12a3a5355
136502682
144144b4d
152a8ca58
hex1d651b1

30822833 has 4 divisors (see below), whose sum is σ = 31044720. Its totient is φ = 30600948.

The previous prime is 30822823. The next prime is 30822851. The reversal of 30822833 is 33822803.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33822803 = 74831829.

It is a cyclic number.

It is not a de Polignac number, because 30822833 - 218 = 30560689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30822796 and 30822805.

It is not an unprimeable number, because it can be changed into a prime (30822823) 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, 110735 + ... + 111012.

It is an arithmetic number, because the mean of its divisors is an integer number (7761180).

Almost surely, 230822833 is an apocalyptic number.

It is an amenable number.

30822833 is a deficient number, since it is larger than the sum of its proper divisors (221887).

30822833 is a wasteful number, since it uses less digits than its factorization.

30822833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221886.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 30822833 is about 5551.8314996044. The cubic root of 30822833 is about 313.5384817951.

The spelling of 30822833 in words is "thirty million, eight hundred twenty-two thousand, eight hundred thirty-three".

Divisors: 1 139 221747 30822833