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15000052 = 2217220589
BaseRepresentation
bin111001001110…
…000111110100
31001020002012111
4321032013310
512320000202
61253300404
7241332634
oct71160764
931202174
1015000052
118515841
125034704
133152692
141dc66c4
1514b46d7
hexe4e1f4

15000052 has 12 divisors (see below), whose sum is σ = 27794340. Its totient is φ = 7058816.

The previous prime is 15000031. The next prime is 15000053. The reversal of 15000052 is 25000051.

It can be written as a sum of positive squares in 2 ways, for example, as 13220496 + 1779556 = 3636^2 + 1334^2 .

It is a junction number, because it is equal to n+sod(n) for n = 14999996 and 15000041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15000053) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 110227 + ... + 110362.

It is an arithmetic number, because the mean of its divisors is an integer number (2316195).

Almost surely, 215000052 is an apocalyptic number.

It is an amenable number.

15000052 is a deficient number, since it is larger than the sum of its proper divisors (12794288).

15000052 is a wasteful number, since it uses less digits than its factorization.

15000052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220610 (or 220608 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 13.

The square root of 15000052 is about 3872.9900593727. The cubic root of 15000052 is about 246.6214924172.

Subtracting 15000052 from its reverse (25000051), we obtain a palindrome (9999999).

The spelling of 15000052 in words is "fifteen million, fifty-two", and thus it is an aban number and an uban number.

Divisors: 1 2 4 17 34 68 220589 441178 882356 3750013 7500026 15000052