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10128497 = 11099133
BaseRepresentation
bin100110101000…
…110001110001
3201001120200112
4212220301301
510043102442
61001031105
7152043101
oct46506161
921046615
1010128497
115798765
123485495
1321381c2
1414b9201
15d51082
hex9a8c71

10128497 has 4 divisors (see below), whose sum is σ = 10138740. Its totient is φ = 10118256.

The previous prime is 10128493. The next prime is 10128509. The reversal of 10128497 is 79482101.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 3389281 + 6739216 = 1841^2 + 2596^2 .

It is a cyclic number.

It is not a de Polignac number, because 10128497 - 22 = 10128493 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10128493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3458 + ... + 5675.

It is an arithmetic number, because the mean of its divisors is an integer number (2534685).

Almost surely, 210128497 is an apocalyptic number.

It is an amenable number.

10128497 is a deficient number, since it is larger than the sum of its proper divisors (10243).

10128497 is an equidigital number, since it uses as much as digits as its factorization.

10128497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10242.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 10128497 is about 3182.5299684371. The cubic root of 10128497 is about 216.3623390829.

The spelling of 10128497 in words is "ten million, one hundred twenty-eight thousand, four hundred ninety-seven".

Divisors: 1 1109 9133 10128497