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20770288083 = 331931242131
BaseRepresentation
bin10011010110000000…
…010111000111010011
31222121111221221212000
4103112000113013103
5320014143204313
613313003205043
71333464351516
oct232600270723
958544857760
1020770288083
118899316946
124037b16783
131c601569bc
141010718d7d
158186c4673
hex4d60171d3

20770288083 has 48 divisors (see below), whose sum is σ = 33469660800. Its totient is φ = 12694611600.

The previous prime is 20770288073. The next prime is 20770288111. The reversal of 20770288083 is 38088207702.

It is not a de Polignac number, because 20770288083 - 25 = 20770288051 is a prime.

It is a super-4 number, since 4×207702880834 (a number of 42 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (20770288003) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 471928 + ... + 514058.

It is an arithmetic number, because the mean of its divisors is an integer number (697284600).

Almost surely, 220770288083 is an apocalyptic number.

20770288083 is a deficient number, since it is larger than the sum of its proper divisors (12699372717).

20770288083 is a wasteful number, since it uses less digits than its factorization.

20770288083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42221 (or 42184 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The spelling of 20770288083 in words is "twenty billion, seven hundred seventy million, two hundred eighty-eight thousand, eighty-three".

Divisors: 1 3 9 19 27 31 57 93 171 279 513 589 837 961 1767 2883 5301 8649 15903 18259 25947 42131 54777 126393 164331 379179 492993 800489 1137537 1306061 2401467 3918183 7204401 11754549 21613203 24815159 35263647 40487891 74445477 121463673 223336431 364391019 670009293 769269929 1093173057 2307809787 6923429361 20770288083