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23008881280 = 2757111393359
BaseRepresentation
bin10101011011011011…
…111010101010000000
32012101112021021102011
4111123123322222000
5334110233200110
614323052102304
71443116156350
oct253333725200
965345237364
1023008881280
119837a06070
124561764994
132228b7b768
141183b60b60
158e9eb648a
hex55b6faa80

23008881280 has 256 divisors, whose sum is σ = 69092352000. Its totient is φ = 7117885440.

The previous prime is 23008881263. The next prime is 23008881283. The reversal of 23008881280 is 8218880032.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (23008881283) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6848241 + ... + 6851599.

It is an arithmetic number, because the mean of its divisors is an integer number (269892000).

Almost surely, 223008881280 is an apocalyptic number.

23008881280 is a gapful number since it is divisible by the number (20) 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 23008881280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34546176000).

23008881280 is an abundant number, since it is smaller than the sum of its proper divisors (46083470720).

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

23008881280 is a wasteful number, since it uses less digits than its factorization.

23008881280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3535 (or 3523 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 40.

The spelling of 23008881280 in words is "twenty-three billion, eight million, eight hundred eighty-one thousand, two hundred eighty".