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20145472360 = 2351338741293
BaseRepresentation
bin10010110000110000…
…111000001101101000
31220222222021000210221
4102300300320031220
5312224220103420
613131003215424
71312136455366
oct226060701550
956888230727
1020145472360
1185a8659612
123aa2817574
131b9087ca60
14d91752636
157cd903caa
hex4b0c38368

20145472360 has 32 divisors (see below), whose sum is σ = 48814030440. Its totient is φ = 7438328064.

The previous prime is 20145472331. The next prime is 20145472363. The reversal of 20145472360 is 6327454102.

It can be written as a sum of positive squares in 4 ways, for example, as 9871217316 + 10274255044 = 99354^2 + 101362^2 .

It is not an unprimeable number, because it can be changed into a prime (20145472363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19370127 + ... + 19371166.

Almost surely, 220145472360 is an apocalyptic number.

20145472360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20145472360 is an abundant number, since it is smaller than the sum of its proper divisors (28668558080).

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

20145472360 is a wasteful number, since it uses less digits than its factorization.

20145472360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38741317 (or 38741313 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

The spelling of 20145472360 in words is "twenty billion, one hundred forty-five million, four hundred seventy-two thousand, three hundred sixty".

Divisors: 1 2 4 5 8 10 13 20 26 40 52 65 104 130 260 520 38741293 77482586 154965172 193706465 309930344 387412930 503636809 774825860 1007273618 1549651720 2014547236 2518184045 4029094472 5036368090 10072736180 20145472360