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13223250400 = 255216529063
BaseRepresentation
bin11000101000010101…
…01100100111100000
31021010112212201102211
430110022230213200
5204040123003100
610024044051504
7645453526303
oct142412544740
937115781384
1013223250400
1156761a8818
122690533b94
131329709a29
148d6280b3a
15525d501ba
hex3142ac9e0

13223250400 has 36 divisors (see below), whose sum is σ = 32281261992. Its totient is φ = 5289299840.

The previous prime is 13223250377. The next prime is 13223250409. The reversal of 13223250400 is 405232231.

It is a super-2 number, since 2×132232504002 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13223250409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8263732 + ... + 8265331.

It is an arithmetic number, because the mean of its divisors is an integer number (896701722).

Almost surely, 213223250400 is an apocalyptic number.

13223250400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13223250400 is an abundant number, since it is smaller than the sum of its proper divisors (19058011592).

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

13223250400 is a wasteful number, since it uses less digits than its factorization.

13223250400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16529083 (or 16529070 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 13223250400 its reverse (405232231), we get a palindrome (13628482631).

The spelling of 13223250400 in words is "thirteen billion, two hundred twenty-three million, two hundred fifty thousand, four hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 80 100 160 200 400 800 16529063 33058126 66116252 82645315 132232504 165290630 264465008 330581260 413226575 528930016 661162520 826453150 1322325040 1652906300 2644650080 3305812600 6611625200 13223250400