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2080812321 = 34729126547
BaseRepresentation
bin111110000000110…
…1010110100100001
312101000102012220000
41330001222310201
513230141443241
6542251010213
7102364420140
oct17401526441
95330365800
102080812321
11978623105
124a0a39969
132721303c3
1415a4d3757
15c2a26eb6
hex7c06ad21

2080812321 has 40 divisors (see below), whose sum is σ = 3674953920. Its totient is φ = 1148025312.

The previous prime is 2080812313. The next prime is 2080812343. The reversal of 2080812321 is 1232180802.

It is not a de Polignac number, because 2080812321 - 23 = 2080812313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2080812311) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 46831 + ... + 79716.

It is an arithmetic number, because the mean of its divisors is an integer number (91873848).

Almost surely, 22080812321 is an apocalyptic number.

2080812321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2080812321 is a deficient number, since it is larger than the sum of its proper divisors (1594141599).

2080812321 is a wasteful number, since it uses less digits than its factorization.

2080812321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126595 (or 126586 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 2080812321 is about 45615.9217927250. The cubic root of 2080812321 is about 1276.6670125760.

The spelling of 2080812321 in words is "two billion, eighty million, eight hundred twelve thousand, three hundred twenty-one".

Divisors: 1 3 7 9 21 27 29 63 81 87 189 203 261 567 609 783 1827 2349 5481 16443 126547 379641 885829 1138923 2657487 3416769 3669863 7972461 10250307 11009589 23917383 25689041 33028767 71752149 77067123 99086301 231201369 297258903 693604107 2080812321