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23020313320 = 2352909197837
BaseRepresentation
bin10101011100000111…
…100001101011101000
32012102022210002020001
4111130013201223220
5334121200011240
614324141112344
71443315302044
oct253407415350
965368702201
1023020313320
119843404134
1245655586b4
13222b352094
141185499024
158eaec389a
hex55c1e1ae8

23020313320 has 32 divisors (see below), whose sum is σ = 51813772200. Its totient is φ = 9204913408.

The previous prime is 23020313317. The next prime is 23020313333. The reversal of 23020313320 is 2331302032.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19777921956 + 3242391364 = 140634^2 + 56942^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 17442 + ... + 215278.

Almost surely, 223020313320 is an apocalyptic number.

23020313320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23020313320 is an abundant number, since it is smaller than the sum of its proper divisors (28793458880).

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

23020313320 is a wasteful number, since it uses less digits than its factorization.

23020313320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200757 (or 200753 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 23020313320 its reverse (2331302032), we get a palindrome (25351615352).

The spelling of 23020313320 in words is "twenty-three billion, twenty million, three hundred thirteen thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 2909 5818 11636 14545 23272 29090 58180 116360 197837 395674 791348 989185 1582696 1978370 3956740 7913480 575507833 1151015666 2302031332 2877539165 4604062664 5755078330 11510156660 23020313320