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20482713220 = 2251024135661
BaseRepresentation
bin10011000100110111…
…010110011010000100
31221212110211122022011
4103010313112122010
5313422033310340
613224251344004
71323403122034
oct230467263204
957773748264
1020482713220
118760a59672
123b77752004
131c156b9568
14dc445b8c4
157ed31c0ea
hex4c4dd6684

20482713220 has 12 divisors (see below), whose sum is σ = 43013697804. Its totient is φ = 8193085280.

The previous prime is 20482713217. The next prime is 20482713221. The reversal of 20482713220 is 2231728402.

It can be written as a sum of positive squares in 2 ways, for example, as 5497036164 + 14985677056 = 74142^2 + 122416^2 .

It is not an unprimeable number, because it can be changed into a prime (20482713221) 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, 512067811 + ... + 512067850.

It is an arithmetic number, because the mean of its divisors is an integer number (3584474817).

Almost surely, 220482713220 is an apocalyptic number.

20482713220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20482713220 is an abundant number, since it is smaller than the sum of its proper divisors (22530984584).

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

20482713220 is a wasteful number, since it uses less digits than its factorization.

20482713220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024135670 (or 1024135668 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The spelling of 20482713220 in words is "twenty billion, four hundred eighty-two million, seven hundred thirteen thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 1024135661 2048271322 4096542644 5120678305 10241356610 20482713220