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20880870227 = 779127297317
BaseRepresentation
bin10011011100100110…
…001100101101010011
31222220020001010000222
4103130212030231103
5320231000321402
613331553303255
71336306316450
oct233446145523
958806033028
1020880870227
118945785948
124068b64b2b
131c7a034019
1410212a2827
158232697a2
hex4dc98cb53

20880870227 has 16 divisors (see below), whose sum is σ = 24356290560. Its totient is φ = 17532129888.

The previous prime is 20880870119. The next prime is 20880870233. The reversal of 20880870227 is 72207808802.

It is a happy number.

It is not a de Polignac number, because 20880870227 - 226 = 20813761363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20880873227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78428 + ... + 218889.

It is an arithmetic number, because the mean of its divisors is an integer number (1522268160).

Almost surely, 220880870227 is an apocalyptic number.

20880870227 is a deficient number, since it is larger than the sum of its proper divisors (3475420333).

20880870227 is a wasteful number, since it uses less digits than its factorization.

20880870227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297530.

The product of its (nonzero) digits is 200704, while the sum is 44.

The spelling of 20880870227 in words is "twenty billion, eight hundred eighty million, eight hundred seventy thousand, two hundred twenty-seven".

Divisors: 1 7 79 127 553 889 10033 70231 297317 2081219 23488043 37759259 164416301 264314813 2982981461 20880870227