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30505241 = 1319123503
BaseRepresentation
bin111010001011…
…1100100011001
32010101211022202
41310113210121
530302131431
63005455545
7520201364
oct164274431
963354282
1030505241
1116246048
12a2715b5
136420c50
1440a10db
152a288cb
hex1d17919

30505241 has 8 divisors (see below), whose sum is σ = 34581120. Its totient is φ = 26676432.

The previous prime is 30505231. The next prime is 30505247. The reversal of 30505241 is 14250503.

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 30505241 - 222 = 26310937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30505247) 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, 61505 + ... + 61998.

It is an arithmetic number, because the mean of its divisors is an integer number (4322640).

Almost surely, 230505241 is an apocalyptic number.

It is an amenable number.

30505241 is a deficient number, since it is larger than the sum of its proper divisors (4075879).

30505241 is a wasteful number, since it uses less digits than its factorization.

30505241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123535.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 30505241 is about 5523.1549860564. The cubic root of 30505241 is about 312.4578836041.

Adding to 30505241 its reverse (14250503), we get a palindrome (44755744).

The spelling of 30505241 in words is "thirty million, five hundred five thousand, two hundred forty-one".

Divisors: 1 13 19 247 123503 1605539 2346557 30505241