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13122414440 = 2351319248719
BaseRepresentation
bin11000011100010100…
…00010011101101000
31020212112010201111122
430032022002131220
5203333314230230
610010042514412
7643120453022
oct141612023550
936775121448
1013122414440
115624296213
122662805a08
131311862895
148c6b13012
1551c082be5
hex30e282768

13122414440 has 32 divisors (see below), whose sum is σ = 29547936000. Its totient is φ = 5244965184.

The previous prime is 13122414379. The next prime is 13122414443. The reversal of 13122414440 is 4441422131.

It is not an unprimeable number, because it can be changed into a prime (13122414443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71600 + ... + 177119.

It is an arithmetic number, because the mean of its divisors is an integer number (923373000).

Almost surely, 213122414440 is an apocalyptic number.

13122414440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13122414440 is an abundant number, since it is smaller than the sum of its proper divisors (16425521560).

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

13122414440 is a wasteful number, since it uses less digits than its factorization.

13122414440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250049 (or 250045 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 13122414440 its reverse (4441422131), we get a palindrome (17563836571).

The spelling of 13122414440 in words is "thirteen billion, one hundred twenty-two million, four hundred fourteen thousand, four hundred forty".

Divisors: 1 2 4 5 8 10 20 40 1319 2638 5276 6595 10552 13190 26380 52760 248719 497438 994876 1243595 1989752 2487190 4974380 9948760 328060361 656120722 1312241444 1640301805 2624482888 3280603610 6561207220 13122414440