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802010105 = 51317725801
BaseRepresentation
bin101111110011011…
…011001111111001
32001220010100000222
4233303123033321
53120303310410
6211325505425
725605654611
oct5763331771
92056110028
10802010105
11381794076
121a4712275
13ca207ac0
147872da41
154a622955
hex2fcdb3f9

802010105 has 16 divisors (see below), whose sum is σ = 1097412624. Its totient is φ = 557414400.

The previous prime is 802010087. The next prime is 802010117. The reversal of 802010105 is 501010208.

It can be written as a sum of positive squares in 8 ways, for example, as 40691641 + 761318464 = 6379^2 + 27592^2 .

It is not a de Polignac number, because 802010105 - 28 = 802009849 is a prime.

It is a super-2 number, since 2×8020101052 = 1286440417044222050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 361796 + ... + 364005.

It is an arithmetic number, because the mean of its divisors is an integer number (68588289).

Almost surely, 2802010105 is an apocalyptic number.

802010105 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

802010105 is a deficient number, since it is larger than the sum of its proper divisors (295402519).

802010105 is a wasteful number, since it uses less digits than its factorization.

802010105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725836.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 802010105 is about 28319.7829264279. The cubic root of 802010105 is about 929.0946231777.

The spelling of 802010105 in words is "eight hundred two million, ten thousand, one hundred five".

Divisors: 1 5 13 17 65 85 221 1105 725801 3629005 9435413 12338617 47177065 61693085 160402021 802010105