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23520030205 = 575279127297
BaseRepresentation
bin10101111001111001…
…110010110111111101
32020201011002022220211
4111321321302313331
5341132111431310
614445511512421
71461563646430
oct257171626775
966634068824
1023520030205
119a7a4978a1
124684988711
1322aaa38349
1411d19b9817
15929cd2c8a
hex579e72dfd

23520030205 has 16 divisors (see below), whose sum is σ = 32262405120. Its totient is φ = 16124838912.

The previous prime is 23520030203. The next prime is 23520030223. The reversal of 23520030205 is 50203002532.

It is not a de Polignac number, because 23520030205 - 21 = 23520030203 is a prime.

It is a super-2 number, since 2×235200302052 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23520030203) 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, 121117 + ... + 248413.

It is an arithmetic number, because the mean of its divisors is an integer number (2016400320).

Almost surely, 223520030205 is an apocalyptic number.

It is an amenable number.

23520030205 is a deficient number, since it is larger than the sum of its proper divisors (8742374915).

23520030205 is a wasteful number, since it uses less digits than its factorization.

23520030205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132588.

The product of its (nonzero) digits is 1800, while the sum is 22.

Adding to 23520030205 its reverse (50203002532), we get a palindrome (73723032737).

The spelling of 23520030205 in words is "twenty-three billion, five hundred twenty million, thirty thousand, two hundred five".

Divisors: 1 5 7 35 5279 26395 36953 127297 184765 636485 891079 4455395 672000863 3360004315 4704006041 23520030205