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23122230220 = 22513931326573
BaseRepresentation
bin10101100010001100…
…010011101111001100
32012200102112222221001
4111202030103233030
5334323242331340
614342221350044
71445663466625
oct254214235714
965612488831
1023122230220
119895994881
124593708324
1322464b723b
141194c28a4c
15904e0629a
hex562313bcc

23122230220 has 48 divisors (see below), whose sum is σ = 49064107680. Its totient is φ = 9152672256.

The previous prime is 23122230193. The next prime is 23122230223. The reversal of 23122230220 is 2203222132.

It is not an unprimeable number, because it can be changed into a prime (23122230223) 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 15 ways as a sum of consecutive naturals, for example, 856854 + ... + 883426.

It is an arithmetic number, because the mean of its divisors is an integer number (1022168910).

Almost surely, 223122230220 is an apocalyptic number.

23122230220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23122230220 is an abundant number, since it is smaller than the sum of its proper divisors (25941877460).

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

23122230220 is a wasteful number, since it uses less digits than its factorization.

23122230220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27034 (or 27032 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 23122230220 its reverse (2203222132), we get a palindrome (25325452352).

The spelling of 23122230220 in words is "twenty-three billion, one hundred twenty-two million, two hundred thirty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 139 278 313 556 626 695 1252 1390 1565 2780 3130 6260 26573 43507 53146 87014 106292 132865 174028 217535 265730 435070 531460 870140 3693647 7387294 8317349 14774588 16634698 18468235 33269396 36936470 41586745 73872940 83173490 166346980 1156111511 2312223022 4624446044 5780557555 11561115110 23122230220