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1028228 = 221715121
BaseRepresentation
bin11111011000010000100
31221020110112
43323002010
5230400403
634012152
711511515
oct3730204
91836415
101028228
11642583
12417058
132a0026
141caa0c
151549d8
hexfb084

1028228 has 12 divisors (see below), whose sum is σ = 1905372. Its totient is φ = 483840.

The previous prime is 1028221. The next prime is 1028231. The reversal of 1028228 is 8228201.

It can be written as a sum of positive squares in 2 ways, for example, as 506944 + 521284 = 712^2 + 722^2 .

It is not an unprimeable number, because it can be changed into a prime (1028221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7493 + ... + 7628.

It is an arithmetic number, because the mean of its divisors is an integer number (158781).

21028228 is an apocalyptic number.

It is an amenable number.

1028228 is a deficient number, since it is larger than the sum of its proper divisors (877144).

1028228 is a wasteful number, since it uses less digits than its factorization.

1028228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15142 (or 15140 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 1028228 is about 1014.0157789699. The cubic root of 1028228 is about 100.9322160615.

The spelling of 1028228 in words is "one million, twenty-eight thousand, two hundred twenty-eight".

Divisors: 1 2 4 17 34 68 15121 30242 60484 257057 514114 1028228