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220302213 = 3312639007
BaseRepresentation
bin11010010000110…
…00101110000101
3120100112111211020
431020120232011
5422344132323
633505501353
75313352335
oct1510305605
9510474736
10220302213
1110339a34a
1261941859
1336845151
14213890c5
1514519ae3
hexd218b85

220302213 has 16 divisors (see below), whose sum is σ = 304398336. Its totient is φ = 141574320.

The previous prime is 220302209. The next prime is 220302217. The reversal of 220302213 is 312203022.

It is an interprime number because it is at equal distance from previous prime (220302209) and next prime (220302217).

It is not a de Polignac number, because 220302213 - 22 = 220302209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220302192 and 220302201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220302217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19956 + ... + 28962.

It is an arithmetic number, because the mean of its divisors is an integer number (19024896).

Almost surely, 2220302213 is an apocalyptic number.

It is an amenable number.

220302213 is a deficient number, since it is larger than the sum of its proper divisors (84096123).

220302213 is a wasteful number, since it uses less digits than its factorization.

220302213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9304.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 220302213 is about 14842.5810760797. The cubic root of 220302213 is about 603.9573718508.

Adding to 220302213 its reverse (312203022), we get a palindrome (532505235).

The spelling of 220302213 in words is "two hundred twenty million, three hundred two thousand, two hundred thirteen".

Divisors: 1 3 31 93 263 789 8153 9007 24459 27021 279217 837651 2368841 7106523 73434071 220302213