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220224207 = 3710486867
BaseRepresentation
bin11010010000001…
…01101011001111
3120100101112211010
431020011223033
5422334133312
633504100303
75312606040
oct1510055317
9510345733
10220224207
11103346785
1261904693
13368187a8
14213688c7
151450193c
hexd205acf

220224207 has 8 divisors (see below), whose sum is σ = 335579776. Its totient is φ = 125842392.

The previous prime is 220224157. The next prime is 220224209. The reversal of 220224207 is 702422022.

220224207 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 220224207 - 26 = 220224143 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 10486867 = 220224207 / (2 + 2 + 0 + 2 + 2 + 4 + 2 + 0 + 7).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220224209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5243413 + ... + 5243454.

It is an arithmetic number, because the mean of its divisors is an integer number (41947472).

Almost surely, 2220224207 is an apocalyptic number.

220224207 is a deficient number, since it is larger than the sum of its proper divisors (115355569).

220224207 is a wasteful number, since it uses less digits than its factorization.

220224207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10486877.

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 220224207 is about 14839.9530659635. The cubic root of 220224207 is about 603.8860790877.

Adding to 220224207 its reverse (702422022), we get a palindrome (922646229).

The spelling of 220224207 in words is "two hundred twenty million, two hundred twenty-four thousand, two hundred seven".

Divisors: 1 3 7 21 10486867 31460601 73408069 220224207