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28617349 is a prime number
BaseRepresentation
bin110110100101…
…0101010000101
31222211220121211
41231022222011
524311223344
62501211421
7465146335
oct155125205
958756554
1028617349
1115176702
129700b71
135c0c857
143b2d0c5
1527a4334
hex1b4aa85

28617349 has 2 divisors, whose sum is σ = 28617350. Its totient is φ = 28617348.

The previous prime is 28617311. The next prime is 28617353. The reversal of 28617349 is 94371682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19272100 + 9345249 = 4390^2 + 3057^2 .

It is a cyclic number.

It is not a de Polignac number, because 28617349 - 213 = 28609157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28617049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14308674 + 14308675.

It is an arithmetic number, because the mean of its divisors is an integer number (14308675).

Almost surely, 228617349 is an apocalyptic number.

It is an amenable number.

28617349 is a deficient number, since it is larger than the sum of its proper divisors (1).

28617349 is an equidigital number, since it uses as much as digits as its factorization.

28617349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 40.

The square root of 28617349 is about 5349.5185764702. The cubic root of 28617349 is about 305.8744020130.

The spelling of 28617349 in words is "twenty-eight million, six hundred seventeen thousand, three hundred forty-nine".