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27148406980 = 2251357420349
BaseRepresentation
bin11001010010001010…
…111101000011000100
32121002000111222010211
4121102022331003010
5421044443010410
620245524325204
71650522436402
oct312212750304
977060458124
1027148406980
1110571627a92
125317b43804
132738672656
141457834472
15a8d5ec68a
hex6522bd0c4

27148406980 has 12 divisors (see below), whose sum is σ = 57011654700. Its totient is φ = 10859362784.

The previous prime is 27148406939. The next prime is 27148406981. The reversal of 27148406980 is 8960484172.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15962806336 + 11185600644 = 126344^2 + 105762^2 .

It is not an unprimeable number, because it can be changed into a prime (27148406981) 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, 678710155 + ... + 678710194.

It is an arithmetic number, because the mean of its divisors is an integer number (4750971225).

Almost surely, 227148406980 is an apocalyptic number.

27148406980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27148406980 is an abundant number, since it is smaller than the sum of its proper divisors (29863247720).

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

27148406980 is a wasteful number, since it uses less digits than its factorization.

27148406980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357420358 (or 1357420356 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 49.

The spelling of 27148406980 in words is "twenty-seven billion, one hundred forty-eight million, four hundred six thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 1357420349 2714840698 5429681396 6787101745 13574203490 27148406980