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30242225 = 521393053
BaseRepresentation
bin111001101011…
…1010110110001
32002220110112102
41303113112301
530220222400
63000110145
7515024516
oct163272661
962813472
1030242225
1116086482
12a165355
13635b310
14403330d
1529c59d5
hex1cd75b1

30242225 has 12 divisors (see below), whose sum is σ = 40385436. Its totient is φ = 22332480.

The previous prime is 30242207. The next prime is 30242231. The reversal of 30242225 is 52224203.

It can be written as a sum of positive squares in 6 ways, for example, as 222784 + 30019441 = 472^2 + 5479^2 .

It is not a de Polignac number, because 30242225 - 222 = 26047921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30242197 and 30242206.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46202 + ... + 46851.

It is an arithmetic number, because the mean of its divisors is an integer number (3365453).

Almost surely, 230242225 is an apocalyptic number.

It is an amenable number.

30242225 is a deficient number, since it is larger than the sum of its proper divisors (10143211).

30242225 is a wasteful number, since it uses less digits than its factorization.

30242225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93076 (or 93071 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 30242225 is about 5499.2931363949. The cubic root of 30242225 is about 311.5572869947.

Adding to 30242225 its reverse (52224203), we get a palindrome (82466428).

The spelling of 30242225 in words is "thirty million, two hundred forty-two thousand, two hundred twenty-five".

Divisors: 1 5 13 25 65 325 93053 465265 1209689 2326325 6048445 30242225