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23054474569 = 7210921992
BaseRepresentation
bin10101011110001001…
…110101110101001001
32012111201001122122111
4111132021311311021
5334203421141234
614331401222321
71444211541400
oct253611656511
965451048574
1023054474569
119860716a75
124574a919a1
132235453139
141189c2c637
158edec0664
hex55e275d49

23054474569 has 27 divisors (see below), whose sum is σ = 27203466087. Its totient is φ = 19481294448.

The previous prime is 23054474561. The next prime is 23054474617. The reversal of 23054474569 is 96547445032.

The square root of 23054474569 is 151837.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 16068858169 + 6985616400 = 126763^2 + 83580^2 .

It is not a de Polignac number, because 23054474569 - 23 = 23054474561 is a prime.

It is a super-2 number, since 2×230544745692 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (23054474561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 115851532 + ... + 115851730.

It is an arithmetic number, because the mean of its divisors is an integer number (1007535781).

Almost surely, 223054474569 is an apocalyptic number.

23054474569 is the 151837-th square number.

23054474569 is the 75919-th centered octagonal number.

It is an amenable number.

23054474569 is a deficient number, since it is larger than the sum of its proper divisors (4148991518).

23054474569 is an frugal number, since it uses more digits than its factorization.

23054474569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630 (or 315 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 49.

Multiplying 23054474569 by its sum of digits (49), we get a square (1129669253881 = 10628592).

23054474569 divided by its sum of digits (49) gives a square (470499481 = 216912).

The spelling of 23054474569 in words is "twenty-three billion, fifty-four million, four hundred seventy-four thousand, five hundred sixty-nine".

Divisors: 1 7 49 109 199 763 1393 5341 9751 11881 21691 39601 83167 151837 277207 582169 1062859 1940449 2364319 4316509 16550233 30215563 115851631 211508941 470499481 3293496367 23054474569