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2204891 = 13169607
BaseRepresentation
bin1000011010010011011011
311011000112122
420122103123
51031024031
6115131455
724512153
oct10322333
94130478
102204891
111276627
128a3b8b
135c2790
14415763
152d847b
hex21a4db

2204891 has 4 divisors (see below), whose sum is σ = 2374512. Its totient is φ = 2035272.

The previous prime is 2204887. The next prime is 2204929. The reversal of 2204891 is 1984022.

2204891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1984022 = 2992011.

It is a cyclic number.

It is not a de Polignac number, because 2204891 - 22 = 2204887 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2204891.

It is not an unprimeable number, because it can be changed into a prime (2204821) 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, 84791 + ... + 84816.

It is an arithmetic number, because the mean of its divisors is an integer number (593628).

22204891 is an apocalyptic number.

2204891 is a deficient number, since it is larger than the sum of its proper divisors (169621).

2204891 is a wasteful number, since it uses less digits than its factorization.

2204891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169620.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 2204891 is about 1484.8875378290. The cubic root of 2204891 is about 130.1554550571.

The spelling of 2204891 in words is "two million, two hundred four thousand, eight hundred ninety-one".

Divisors: 1 13 169607 2204891