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30005941 = 74286563
BaseRepresentation
bin111001001110…
…1101010110101
32002110110102011
41302131222311
530140142231
62551044221
7513021610
oct162355265
962413364
1030005941
1115a349a9
12a070671
1362a78c4
143db1177
15297a9b1
hex1c9dab5

30005941 has 4 divisors (see below), whose sum is σ = 34292512. Its totient is φ = 25719372.

The previous prime is 30005917. The next prime is 30005957. The reversal of 30005941 is 14950003.

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.

It is not a de Polignac number, because 30005941 - 29 = 30005429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30005141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2143275 + ... + 2143288.

It is an arithmetic number, because the mean of its divisors is an integer number (8573128).

Almost surely, 230005941 is an apocalyptic number.

It is an amenable number.

30005941 is a deficient number, since it is larger than the sum of its proper divisors (4286571).

30005941 is an equidigital number, since it uses as much as digits as its factorization.

30005941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4286570.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 30005941 is about 5477.7678848232. The cubic root of 30005941 is about 310.7437604286.

Adding to 30005941 its reverse (14950003), we get a palindrome (44955944).

The spelling of 30005941 in words is "thirty million, five thousand, nine hundred forty-one".

Divisors: 1 7 4286563 30005941