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980980 = 225731113
BaseRepresentation
bin11101111011111110100
31211211122121
43233133310
5222342410
633005324
711224000
oct3573764
91754577
10980980
11610030
123b3844
13284680
141b7700
151459da
hexef7f4

980980 has 96 divisors (see below), whose sum is σ = 2822400. Its totient is φ = 282240.

The previous prime is 980963. The next prime is 980999. The reversal of 980980 is 89089.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75454 + ... + 75466.

It is an arithmetic number, because the mean of its divisors is an integer number (29400).

2980980 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 980980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1411200).

980980 is an abundant number, since it is smaller than the sum of its proper divisors (1841420).

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

980980 is a wasteful number, since it uses less digits than its factorization.

980980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54 (or 38 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 980980 is about 990.4443447261. Note that the first 3 decimals coincide. The cubic root of 980980 is about 99.3619374205.

It can be divided in two parts, 9809 and 80, that added together give a palindrome (9889).

The spelling of 980980 in words is "nine hundred eighty thousand, nine hundred eighty".

Divisors: 1 2 4 5 7 10 11 13 14 20 22 26 28 35 44 49 52 55 65 70 77 91 98 110 130 140 143 154 182 196 220 245 260 286 308 343 364 385 455 490 539 572 637 686 715 770 910 980 1001 1078 1274 1372 1430 1540 1715 1820 2002 2156 2548 2695 2860 3185 3430 3773 4004 4459 5005 5390 6370 6860 7007 7546 8918 10010 10780 12740 14014 15092 17836 18865 20020 22295 28028 35035 37730 44590 49049 70070 75460 89180 98098 140140 196196 245245 490490 980980