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20300344221 = 352571128717
BaseRepresentation
bin10010111001111111…
…101010101110011101
31221101202200100001210
4102321333222232131
5313033342003341
613154214455033
71316030036013
oct227177525635
957352610053
1020300344221
118678019093
123b26664479
131bb6996301
14da81488b3
157dc2e6c16
hex4b9feab9d

20300344221 has 8 divisors (see below), whose sum is σ = 27067850784. Its totient is φ = 13533200240.

The previous prime is 20300344219. The next prime is 20300344243. The reversal of 20300344221 is 12244300302.

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

It is a cyclic number.

It is not a de Polignac number, because 20300344221 - 21 = 20300344219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20300344291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93355 + ... + 222071.

It is an arithmetic number, because the mean of its divisors is an integer number (3383481348).

Almost surely, 220300344221 is an apocalyptic number.

It is an amenable number.

20300344221 is a deficient number, since it is larger than the sum of its proper divisors (6767506563).

20300344221 is a wasteful number, since it uses less digits than its factorization.

20300344221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181291.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20300344221 its reverse (12244300302), we get a palindrome (32544644523).

The spelling of 20300344221 in words is "twenty billion, three hundred million, three hundred forty-four thousand, two hundred twenty-one".

Divisors: 1 3 52571 128717 157713 386151 6766781407 20300344221