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22080049 = 29761381
BaseRepresentation
bin101010000111…
…0101000110001
31112112210010121
41110032220301
521123030144
62105130241
7355451215
oct124165061
945483117
1022080049
1111511082
127489981
134761124
142d0a945
151e12384
hex150ea31

22080049 has 4 divisors (see below), whose sum is σ = 22841460. Its totient is φ = 21318640.

The previous prime is 22079929. The next prime is 22080053. The reversal of 22080049 is 94008022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94008022 = 247004011.

It can be written as a sum of positive squares in 2 ways, for example, as 4981824 + 17098225 = 2232^2 + 4135^2 .

It is a cyclic number.

It is not a de Polignac number, because 22080049 - 223 = 13691441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22080089) 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, 380662 + ... + 380719.

It is an arithmetic number, because the mean of its divisors is an integer number (5710365).

Almost surely, 222080049 is an apocalyptic number.

22080049 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

22080049 is a deficient number, since it is larger than the sum of its proper divisors (761411).

22080049 is an equidigital number, since it uses as much as digits as its factorization.

22080049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761410.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 22080049 is about 4698.9412637317. The cubic root of 22080049 is about 280.5433708672.

The spelling of 22080049 in words is "twenty-two million, eighty thousand, forty-nine".

Divisors: 1 29 761381 22080049