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30808433 = 1031132647
BaseRepresentation
bin111010110000…
…1100101110001
32010222020020002
41311201211301
530341332213
63020155345
7522603335
oct165414561
963866202
1030808433
1116432917
12a398b55
1364c8c56
14413d7c5
152a88658
hex1d61971

30808433 has 8 divisors (see below), whose sum is σ = 31394688. Its totient is φ = 30227904.

The previous prime is 30808399. The next prime is 30808439. The reversal of 30808433 is 33480803.

30808433 is nontrivially palindromic in base 8.

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 30808433 - 210 = 30807409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30808396 and 30808405.

It is not an unprimeable number, because it can be changed into a prime (30808439) 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, 10316 + ... + 12962.

It is an arithmetic number, because the mean of its divisors is an integer number (3924336).

Almost surely, 230808433 is an apocalyptic number.

It is an amenable number.

30808433 is a deficient number, since it is larger than the sum of its proper divisors (586255).

30808433 is a wasteful number, since it uses less digits than its factorization.

30808433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2863.

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

The square root of 30808433 is about 5550.5344787687. The cubic root of 30808433 is about 313.4896472462.

The spelling of 30808433 in words is "thirty million, eight hundred eight thousand, four hundred thirty-three".

Divisors: 1 103 113 2647 11639 272641 299111 30808433