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220192393 = 860925577
BaseRepresentation
bin11010001111111…
…01111010001001
3120100022221011211
431013331322021
5422332124033
633503253121
75312414221
oct1507757211
9510287154
10220192393
11103324893
12618aa1a1
1336807175
142135b081
15144e72cd
hexd1fde89

220192393 has 4 divisors (see below), whose sum is σ = 220226580. Its totient is φ = 220158208.

The previous prime is 220192391. The next prime is 220192403. The reversal of 220192393 is 393291022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26759929 + 193432464 = 5173^2 + 13908^2 .

It is a cyclic number.

It is not a de Polignac number, because 220192393 - 21 = 220192391 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220192391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4180 + ... + 21397.

It is an arithmetic number, because the mean of its divisors is an integer number (55056645).

Almost surely, 2220192393 is an apocalyptic number.

It is an amenable number.

220192393 is a deficient number, since it is larger than the sum of its proper divisors (34187).

220192393 is an equidigital number, since it uses as much as digits as its factorization.

220192393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34186.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 220192393 is about 14838.8811235888. The cubic root of 220192393 is about 603.8569981839.

The spelling of 220192393 in words is "two hundred twenty million, one hundred ninety-two thousand, three hundred ninety-three".

Divisors: 1 8609 25577 220192393