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23200123220 = 2251160006161
BaseRepresentation
bin10101100110110101…
…011100100101010100
32012212212010101000222
4111212311130211110
5340003212420340
614354043053512
71450630536131
oct254665344524
965785111028
1023200123220
119925956a5a
1245b5811298
13225968a581
1411a1303588
1590bb908b5
hex566d5c954

23200123220 has 12 divisors (see below), whose sum is σ = 48720258804. Its totient is φ = 9280049280.

The previous prime is 23200123189. The next prime is 23200123277. The reversal of 23200123220 is 2232100232.

It can be written as a sum of positive squares in 2 ways, for example, as 7105141264 + 16094981956 = 84292^2 + 126866^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 580003061 + ... + 580003100.

It is an arithmetic number, because the mean of its divisors is an integer number (4060021567).

Almost surely, 223200123220 is an apocalyptic number.

23200123220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23200123220 is an abundant number, since it is smaller than the sum of its proper divisors (25520135584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23200123220 is a wasteful number, since it uses less digits than its factorization.

23200123220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160006170 (or 1160006168 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 23200123220 its reverse (2232100232), we get a palindrome (25432223452).

It can be divided in two parts, 2320012 and 3220, that added together give a palindrome (2323232).

The spelling of 23200123220 in words is "twenty-three billion, two hundred million, one hundred twenty-three thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 1160006161 2320012322 4640024644 5800030805 11600061610 23200123220