Search a number
-
+
30245105 = 511549911
BaseRepresentation
bin111001101100…
…0000011110001
32002220121111002
41303120003301
530220320410
63000131345
7515036102
oct163300361
962817432
1030245105
1116088660
12a166b55
13635c717
1440343a9
1529c67a5
hex1cd80f1

30245105 has 8 divisors (see below), whose sum is σ = 39593664. Its totient is φ = 21996400.

The previous prime is 30245101. The next prime is 30245107. The reversal of 30245105 is 50154203.

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

It is not a de Polignac number, because 30245105 - 22 = 30245101 is a prime.

It is a super-2 number, since 2×302451052 = 1829532752922050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30245101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274901 + ... + 275010.

It is an arithmetic number, because the mean of its divisors is an integer number (4949208).

Almost surely, 230245105 is an apocalyptic number.

It is an amenable number.

30245105 is a deficient number, since it is larger than the sum of its proper divisors (9348559).

30245105 is a wasteful number, since it uses less digits than its factorization.

30245105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549927.

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

The square root of 30245105 is about 5499.5549819963. The cubic root of 30245105 is about 311.5671766606.

Adding to 30245105 its reverse (50154203), we get a palindrome (80399308).

The spelling of 30245105 in words is "thirty million, two hundred forty-five thousand, one hundred five".

Divisors: 1 5 11 55 549911 2749555 6049021 30245105