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6880020 = 2235716381
BaseRepresentation
bin11010001111101100010100
3110221112121120
4122033230110
53230130040
6403243540
7112323240
oct32175424
913845546
106880020
11397a074
1223795b0
13156b724
14cb1420
1590d7d0
hex68fb14

6880020 has 48 divisors (see below), whose sum is σ = 22017408. Its totient is φ = 1572480.

The previous prime is 6880009. The next prime is 6880021. The reversal of 6880020 is 200886.

6880020 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6880021) 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, 7771 + ... + 8610.

It is an arithmetic number, because the mean of its divisors is an integer number (458696).

Almost surely, 26880020 is an apocalyptic number.

6880020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6880020 is an abundant number, since it is smaller than the sum of its proper divisors (15137388).

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

6880020 is a wasteful number, since it uses less digits than its factorization.

6880020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16400 (or 16398 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 6880020 is about 2622.9792221823. The cubic root of 6880020 is about 190.1938925572.

The spelling of 6880020 in words is "six million, eight hundred eighty thousand, twenty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 60 70 84 105 140 210 420 16381 32762 49143 65524 81905 98286 114667 163810 196572 229334 245715 327620 344001 458668 491430 573335 688002 982860 1146670 1376004 1720005 2293340 3440010 6880020