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15206072441 = 72310328009
BaseRepresentation
bin11100010100101101…
…00100000001111001
31110020201220111221012
432022112210001321
5222120223304231
610552514523305
71045551324500
oct161226440171
943221814835
1015206072441
1164a348231a
122b44596535
13158444b301
14a43747837
155dee6ce2b
hex38a5a4079

15206072441 has 6 divisors (see below), whose sum is σ = 17688696570. Its totient is φ = 13033776336.

The previous prime is 15206072411. The next prime is 15206072443. The reversal of 15206072441 is 14427060251.

It can be written as a sum of positive squares in only one way, i.e., 15183414841 + 22657600 = 123221^2 + 4760^2 .

It is not a de Polignac number, because 15206072441 - 214 = 15206056057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15206072398 and 15206072407.

It is not an unprimeable number, because it can be changed into a prime (15206072443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 155163956 + ... + 155164053.

It is an arithmetic number, because the mean of its divisors is an integer number (2948116095).

Almost surely, 215206072441 is an apocalyptic number.

It is an amenable number.

15206072441 is a deficient number, since it is larger than the sum of its proper divisors (2482624129).

15206072441 is an equidigital number, since it uses as much as digits as its factorization.

15206072441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310328023 (or 310328016 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The spelling of 15206072441 in words is "fifteen billion, two hundred six million, seventy-two thousand, four hundred forty-one".

Divisors: 1 7 49 310328009 2172296063 15206072441