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15030225 = 335273181
BaseRepresentation
bin111001010101…
…011111010001
31001021121121000
4321111133101
512321431400
61254052213
7241516620
oct71253721
931247530
1015030225
118536481
12504a069
133163332
141dd36b7
1514bd600
hexe557d1

15030225 has 48 divisors (see below), whose sum is σ = 31565440. Its totient is φ = 6868800.

The previous prime is 15030199. The next prime is 15030233. The reversal of 15030225 is 52203051.

It is a happy number.

It is not a de Polignac number, because 15030225 - 26 = 15030161 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15030198 and 15030207.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3135 + ... + 6315.

Almost surely, 215030225 is an apocalyptic number.

15030225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15030225 is an abundant number, since it is smaller than the sum of its proper divisors (16535215).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15030225 is a wasteful number, since it uses less digits than its factorization.

15030225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3207 (or 3196 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 15030225 is about 3876.8834132586. The cubic root of 15030225 is about 246.7867435420.

Adding to 15030225 its reverse (52203051), we get a palindrome (67233276).

The spelling of 15030225 in words is "fifteen million, thirty thousand, two hundred twenty-five".

Divisors: 1 3 5 7 9 15 21 25 27 35 45 63 75 105 135 175 189 225 315 525 675 945 1575 3181 4725 9543 15905 22267 28629 47715 66801 79525 85887 111335 143145 200403 238575 334005 429435 556675 601209 715725 1002015 1670025 2147175 3006045 5010075 15030225