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2080780 = 2251353151
BaseRepresentation
bin111111100000000001100
310220201021221
413330000030
51013041110
6112333124
723454262
oct7740014
93821257
102080780
1111a1359
128441a4
1357b140
143c2432
152b17da
hex1fc00c

2080780 has 48 divisors (see below), whose sum is σ = 4826304. Its totient is φ = 748800.

The previous prime is 2080777. The next prime is 2080801. The reversal of 2080780 is 870802.

2080780 = T79 + T80 + ... + T234.

It is a zygodrome in base 2.

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, 13705 + ... + 13855.

It is an arithmetic number, because the mean of its divisors is an integer number (100548).

22080780 is an apocalyptic number.

2080780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2080780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2413152).

2080780 is an abundant number, since it is smaller than the sum of its proper divisors (2745524).

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

2080780 is a wasteful number, since it uses less digits than its factorization.

2080780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 2080780 is about 1442.4909011845. The cubic root of 2080780 is about 127.6660402438. Note that the first 3 decimals are identical.

The spelling of 2080780 in words is "two million, eighty thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 13 20 26 52 53 65 106 130 151 212 260 265 302 530 604 689 755 1060 1378 1510 1963 2756 3020 3445 3926 6890 7852 8003 9815 13780 16006 19630 32012 39260 40015 80030 104039 160060 208078 416156 520195 1040390 2080780