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1228893 = 34197103
BaseRepresentation
bin100101100000001011101
32022102201120
410230001131
5303311033
642201153
713305531
oct4540135
92272646
101228893
1176a316
124b31b9
13340473
1423dbc1
151941b3
hex12c05d

1228893 has 16 divisors (see below), whose sum is σ = 1712256. Its totient is φ = 783360.

The previous prime is 1228891. The next prime is 1228907. The reversal of 1228893 is 3988221.

It is not a de Polignac number, because 1228893 - 21 = 1228891 is a prime.

1228893 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11880 + ... + 11982.

It is an arithmetic number, because the mean of its divisors is an integer number (107016).

21228893 is an apocalyptic number.

It is an amenable number.

1228893 is a deficient number, since it is larger than the sum of its proper divisors (483363).

1228893 is a wasteful number, since it uses less digits than its factorization.

1228893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244.

The product of its digits is 6912, while the sum is 33.

The square root of 1228893 is about 1108.5544641559. The cubic root of 1228893 is about 107.1119740832. Note that the first 3 decimals are identical.

The spelling of 1228893 in words is "one million, two hundred twenty-eight thousand, eight hundred ninety-three".

Divisors: 1 3 41 97 103 123 291 309 3977 4223 9991 11931 12669 29973 409631 1228893