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BaseRepresentation
bin11010010001000…
…11010001100001
3120100121201010021
431020203101201
5422402023231
633510433441
75313622351
oct1510432141
9510551107
10220345441
11103419878
1261962881
133685ba24
142139ab61
1514527811
hexd223461

220345441 has 4 divisors (see below), whose sum is σ = 221930800. Its totient is φ = 218760084.

The previous prime is 220345423. The next prime is 220345453. The reversal of 220345441 is 144543022.

Adding to 220345441 its reverse (144543022), we get a palindrome (364888463).

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220345441 - 25 = 220345409 is a prime.

It is a super-2 number, since 2×2203454412 = 97104226738968962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220355441) 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, 792471 + ... + 792748.

It is an arithmetic number, because the mean of its divisors is an integer number (55482700).

Almost surely, 2220345441 is an apocalyptic number.

It is an amenable number.

220345441 is a deficient number, since it is larger than the sum of its proper divisors (1585359).

220345441 is a wasteful number, since it uses less digits than its factorization.

220345441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585358.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 220345441 is about 14844.0372203791. The cubic root of 220345441 is about 603.9968723798.

The spelling of 220345441 in words is "two hundred twenty million, three hundred forty-five thousand, four hundred forty-one".

Divisors: 1 139 1585219 220345441