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13820746180 = 225691037309
BaseRepresentation
bin11001101111100011…
…11101100111000100
31022200012011122120011
430313301331213010
5211301102334210
610203230320004
7666330255433
oct146761754704
938605148504
1013820746180
1159524a618a
122818659004
1313c3439827
1495177511a
1555d525d8a
hex337c7d9c4

13820746180 has 12 divisors (see below), whose sum is σ = 29023567020. Its totient is φ = 5528298464.

The previous prime is 13820746169. The next prime is 13820746189. The reversal of 13820746180 is 8164702831.

It can be written as a sum of positive squares in 2 ways, for example, as 1611380164 + 12209366016 = 40142^2 + 110496^2 .

It is not an unprimeable number, because it can be changed into a prime (13820746189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345518635 + ... + 345518674.

It is an arithmetic number, because the mean of its divisors is an integer number (2418630585).

Almost surely, 213820746180 is an apocalyptic number.

13820746180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13820746180 is an abundant number, since it is smaller than the sum of its proper divisors (15202820840).

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

13820746180 is a wasteful number, since it uses less digits than its factorization.

13820746180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691037318 (or 691037316 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 13820746180 in words is "thirteen billion, eight hundred twenty million, seven hundred forty-six thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 691037309 1382074618 2764149236 3455186545 6910373090 13820746180