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30830305 = 511560551
BaseRepresentation
bin111010110011…
…0111011100001
32011000100020011
41311212323201
530343032210
63020444521
7523024162
oct165467341
964010204
1030830305
11164482a0
12a3a9741
136505bac
144147769
152a8ed8a
hex1d66ee1

30830305 has 8 divisors (see below), whose sum is σ = 40359744. Its totient is φ = 22422000.

The previous prime is 30830291. The next prime is 30830321. The reversal of 30830305 is 50303803.

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

It is not a de Polignac number, because 30830305 - 29 = 30829793 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280221 + ... + 280330.

It is an arithmetic number, because the mean of its divisors is an integer number (5044968).

Almost surely, 230830305 is an apocalyptic number.

It is an amenable number.

30830305 is a deficient number, since it is larger than the sum of its proper divisors (9529439).

30830305 is a wasteful number, since it uses less digits than its factorization.

30830305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560567.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 30830305 is about 5552.5043899127. The cubic root of 30830305 is about 313.5638155063.

The spelling of 30830305 in words is "thirty million, eight hundred thirty thousand, three hundred five".

Divisors: 1 5 11 55 560551 2802755 6166061 30830305