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BaseRepresentation
bin100101100000000011011
32022102122010
410230000123
5303310302
642201003
713305405
oct4540033
92272563
101228827
1176a266
124b3163
13340422
1423db75
1519416c
hex12c01b

1228827 has 4 divisors (see below), whose sum is σ = 1638440. Its totient is φ = 819216.

The previous prime is 1228789. The next prime is 1228837. The reversal of 1228827 is 7288221.

It can be divided in two parts, 12288 and 27, that multiplied together give a 4-th power (331776 = 244).

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1228827 - 26 = 1228763 is a prime.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1228794 and 1228803.

It is not an unprimeable number, because it can be changed into a prime (1228837) 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, 204802 + ... + 204807.

It is an arithmetic number, because the mean of its divisors is an integer number (409610).

21228827 is an apocalyptic number.

1228827 is a deficient number, since it is larger than the sum of its proper divisors (409613).

1228827 is an equidigital number, since it uses as much as digits as its factorization.

1228827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409612.

The product of its digits is 3584, while the sum is 30.

The square root of 1228827 is about 1108.5246952594. The cubic root of 1228827 is about 107.1100564991.

The spelling of 1228827 in words is "one million, two hundred twenty-eight thousand, eight hundred twenty-seven".

Divisors: 1 3 409609 1228827