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13223030240 = 2557219293061
BaseRepresentation
bin11000101000010011…
…10110110111100000
31021010112110112102202
430110021312313200
5204040043431430
610024035232332
7645451621400
oct142411666740
937115415382
1013223030240
115676068372
1226904486a8
131329660764
148d6224800
15525d09d45
hex314276de0

13223030240 has 288 divisors, whose sum is σ = 39584311200. Its totient is φ = 4145541120.

The previous prime is 13223030237. The next prime is 13223030251. The reversal of 13223030240 is 4203032231.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4318310 + ... + 4321370.

It is an arithmetic number, because the mean of its divisors is an integer number (137445525).

Almost surely, 213223030240 is an apocalyptic number.

13223030240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13223030240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19792155600).

13223030240 is an abundant number, since it is smaller than the sum of its proper divisors (26361280960).

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

13223030240 is a wasteful number, since it uses less digits than its factorization.

13223030240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3138 (or 3123 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 13223030240 its reverse (4203032231), we get a palindrome (17426062471).

The spelling of 13223030240 in words is "thirteen billion, two hundred twenty-three million, thirty thousand, two hundred forty".