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30252265 = 517355909
BaseRepresentation
bin111001101100…
…1110011101001
32002220222022021
41303121303221
530221033030
63000224441
7515066011
oct163316351
962828267
1030252265
1116092a7a
12a16b121
136362a64
144036c41
1529c897a
hex1cd9ce9

30252265 has 8 divisors (see below), whose sum is σ = 38438280. Its totient is φ = 22778112.

The previous prime is 30252251. The next prime is 30252269. The reversal of 30252265 is 56225203.

It can be written as a sum of positive squares in 4 ways, for example, as 2247001 + 28005264 = 1499^2 + 5292^2 .

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 30252265 - 211 = 30250217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30252269) 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, 177870 + ... + 178039.

It is an arithmetic number, because the mean of its divisors is an integer number (4804785).

Almost surely, 230252265 is an apocalyptic number.

It is an amenable number.

30252265 is a deficient number, since it is larger than the sum of its proper divisors (8186015).

30252265 is a wasteful number, since it uses less digits than its factorization.

30252265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355931.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 30252265 is about 5500.2059052366. The cubic root of 30252265 is about 311.5917607486.

Adding to 30252265 its reverse (56225203), we get a palindrome (86477468).

The spelling of 30252265 in words is "thirty million, two hundred fifty-two thousand, two hundred sixty-five".

Divisors: 1 5 17 85 355909 1779545 6050453 30252265