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20051108960 = 255125319431
BaseRepresentation
bin10010101011001000…
…111010010001100000
31220202101200212120012
4102223020322101200
5312031040441320
613113352504052
71306612420421
oct225310722140
956671625505
1020051108960
11855a367a33
123a770ab028
131b77160a1c
14d82dcb648
157c54b44c5
hex4ab23a460

20051108960 has 24 divisors (see below), whose sum is σ = 47370745296. Its totient is φ = 8020443520.

The previous prime is 20051108953. The next prime is 20051108989. The reversal of 20051108960 is 6980115002.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62659556 + ... + 62659875.

It is an arithmetic number, because the mean of its divisors is an integer number (1973781054).

Almost surely, 220051108960 is an apocalyptic number.

20051108960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20051108960 is an abundant number, since it is smaller than the sum of its proper divisors (27319636336).

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

20051108960 is a wasteful number, since it uses less digits than its factorization.

20051108960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125319446 (or 125319438 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 32.

The spelling of 20051108960 in words is "twenty billion, fifty-one million, one hundred eight thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 125319431 250638862 501277724 626597155 1002555448 1253194310 2005110896 2506388620 4010221792 5012777240 10025554480 20051108960