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30240265 = 5114871129
BaseRepresentation
bin111001101011…
…0111000001001
32002220100211211
41303112320021
530220142030
63000053121
7515016016
oct163267011
962810754
1030240265
1116084a60
12a1641a1
13635a463
14403270d
1529c512a
hex1cd6e09

30240265 has 16 divisors (see below), whose sum is σ = 39703680. Its totient is φ = 21928320.

The previous prime is 30240257. The next prime is 30240271. The reversal of 30240265 is 56204203.

It is a happy number.

It is not a de Polignac number, because 30240265 - 23 = 30240257 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 26221 + ... + 27349.

It is an arithmetic number, because the mean of its divisors is an integer number (2481480).

Almost surely, 230240265 is an apocalyptic number.

It is an amenable number.

30240265 is a deficient number, since it is larger than the sum of its proper divisors (9463415).

30240265 is a wasteful number, since it uses less digits than its factorization.

30240265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 30240265 is about 5499.1149287863. The cubic root of 30240265 is about 311.5505561686.

Adding to 30240265 its reverse (56204203), we get a palindrome (86444468).

The spelling of 30240265 in words is "thirty million, two hundred forty thousand, two hundred sixty-five".

Divisors: 1 5 11 55 487 1129 2435 5357 5645 12419 26785 62095 549823 2749115 6048053 30240265