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6989080 = 2357109229
BaseRepresentation
bin11010101010010100011000
3111011002012211
4122222110120
53242122310
6405444504
7113256220
oct32522430
914132184
106989080
113a43aaa
122410734
1315a9267
14cdd080
15930c8a
hex6aa518

6989080 has 64 divisors (see below), whose sum is σ = 18216000. Its totient is φ = 2363904.

The previous prime is 6989071. The next prime is 6989107. The reversal of 6989080 is 809896.

It is a happy number.

6989080 is nontrivially palindromic in base 6.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent 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, 30406 + ... + 30634.

It is an arithmetic number, because the mean of its divisors is an integer number (284625).

Almost surely, 26989080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6989080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9108000).

6989080 is an abundant number, since it is smaller than the sum of its proper divisors (11226920).

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

6989080 is a wasteful number, since it uses less digits than its factorization.

6989080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356 (or 352 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 6989080 is about 2643.6868195760. The cubic root of 6989080 is about 191.1935940852.

The spelling of 6989080 in words is "six million, nine hundred eighty-nine thousand, eighty".

Divisors: 1 2 4 5 7 8 10 14 20 28 35 40 56 70 109 140 218 229 280 436 458 545 763 872 916 1090 1145 1526 1603 1832 2180 2290 3052 3206 3815 4360 4580 6104 6412 7630 8015 9160 12824 15260 16030 24961 30520 32060 49922 64120 99844 124805 174727 199688 249610 349454 499220 698908 873635 998440 1397816 1747270 3494540 6989080