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1682623020 = 2235132157209
BaseRepresentation
bin110010001001010…
…1100101000101100
311100021011002212010
41210102230220230
511421222414040
6434544241220
756461026321
oct14422545054
94307132763
101682623020
11793884641
123ab610210
1320a7a4030
1411d680b48
159cabee80
hex644aca2c

1682623020 has 48 divisors (see below), whose sum is σ = 5073757920. Its totient is φ = 414183936.

The previous prime is 1682622979. The next prime is 1682623021. The reversal of 1682623020 is 203262861.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1682623021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1077825 + ... + 1079384.

It is an arithmetic number, because the mean of its divisors is an integer number (105703290).

Almost surely, 21682623020 is an apocalyptic number.

1682623020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1682623020 is an abundant number, since it is smaller than the sum of its proper divisors (3391134900).

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

1682623020 is a wasteful number, since it uses less digits than its factorization.

1682623020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157234 (or 2157232 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 1682623020 is about 41019.7881515739. The cubic root of 1682623020 is about 1189.4027603538.

Adding to 1682623020 its reverse (203262861), we get a palindrome (1885885881).

The spelling of 1682623020 in words is "one billion, six hundred eighty-two million, six hundred twenty-three thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 13 15 20 26 30 39 52 60 65 78 130 156 195 260 390 780 2157209 4314418 6471627 8628836 10786045 12943254 21572090 25886508 28043717 32358135 43144180 56087434 64716270 84131151 112174868 129432540 140218585 168262302 280437170 336524604 420655755 560874340 841311510 1682623020