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15030030 = 235501001
BaseRepresentation
bin111001010101…
…011100001110
31001021121022210
4321111130032
512321430110
61254051250
7241516221
oct71253416
931247283
1015030030
118536314
125049b26
133163212
141dd35b8
1514bd520
hexe5570e

15030030 has 16 divisors (see below), whose sum is σ = 36072144. Its totient is φ = 4008000.

The previous prime is 15030019. The next prime is 15030049. The reversal of 15030030 is 3003051.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 15029988 and 15030015.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 250471 + ... + 250530.

It is an arithmetic number, because the mean of its divisors is an integer number (2254509).

Almost surely, 215030030 is an apocalyptic number.

15030030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15030030 is an abundant number, since it is smaller than the sum of its proper divisors (21042114).

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

15030030 is a wasteful number, since it uses less digits than its factorization.

15030030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501011.

The product of its (nonzero) digits is 45, while the sum is 12.

The square root of 15030030 is about 3876.8582641103. The cubic root of 15030030 is about 246.7856762787.

Adding to 15030030 its reverse (3003051), we get a palindrome (18033081).

The spelling of 15030030 in words is "fifteen million, thirty thousand, thirty".

Divisors: 1 2 3 5 6 10 15 30 501001 1002002 1503003 2505005 3006006 5010010 7515015 15030030