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1028149 is a prime number
BaseRepresentation
bin11111011000000110101
31221020100121
43323000311
5230400044
634011541
711511343
oct3730065
91836317
101028149
11642511
12416bb1
1329cc95
141ca993
15154984
hexfb035

1028149 has 2 divisors, whose sum is σ = 1028150. Its totient is φ = 1028148.

The previous prime is 1028141. The next prime is 1028189. The reversal of 1028149 is 9418201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 552049 + 476100 = 743^2 + 690^2 .

It is a cyclic number.

It is not a de Polignac number, because 1028149 - 23 = 1028141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1028141) 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 as a sum of consecutive naturals, namely, 514074 + 514075.

It is an arithmetic number, because the mean of its divisors is an integer number (514075).

21028149 is an apocalyptic number.

It is an amenable number.

1028149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028149 is an equidigital number, since it uses as much as digits as its factorization.

1028149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 1028149 is about 1013.9768241927. The cubic root of 1028149 is about 100.9296310805.

The spelling of 1028149 in words is "one million, twenty-eight thousand, one hundred forty-nine".