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220804243 = 11109184157
BaseRepresentation
bin11010010100100…
…11010010010011
3120101111000110221
431022103102103
5423011213433
633524333511
75320543102
oct1512232223
9511430427
10220804243
11103702550
1261b44297
133698c7ca
142147a039
15145b872d
hexd293493

220804243 has 8 divisors (see below), whose sum is σ = 243088560. Its totient is φ = 198888480.

The previous prime is 220804219. The next prime is 220804247. The reversal of 220804243 is 342408022.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-220804243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220804247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90880 + ... + 93277.

It is an arithmetic number, because the mean of its divisors is an integer number (30386070).

Almost surely, 2220804243 is an apocalyptic number.

220804243 is a deficient number, since it is larger than the sum of its proper divisors (22284317).

220804243 is a wasteful number, since it uses less digits than its factorization.

220804243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184277.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 220804243 is about 14859.4832682701. The cubic root of 220804243 is about 604.4157946838.

The spelling of 220804243 in words is "two hundred twenty million, eight hundred four thousand, two hundred forty-three".

Divisors: 1 11 109 1199 184157 2025727 20073113 220804243