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2280080 = 245112591
BaseRepresentation
bin1000101100101010010000
311021211200102
420230222100
51040430310
6120511532
725244315
oct10545220
94254612
102280080
111318070
1291b5a8
1361aa7a
14434d0c
153008a5
hex22ca90

2280080 has 40 divisors (see below), whose sum is σ = 5785344. Its totient is φ = 828800.

The previous prime is 2280079. The next prime is 2280097. The reversal of 2280080 is 800822.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416 + ... + 2175.

22280080 is an apocalyptic number.

2280080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2280080 is an abundant number, since it is smaller than the sum of its proper divisors (3505264).

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

2280080 is a wasteful number, since it uses less digits than its factorization.

2280080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2615 (or 2609 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 2280080 is about 1509.9933774689. The cubic root of 2280080 is about 131.6184266656.

Adding to 2280080 its sum of digits (20), we get a square (2280100 = 15102).

It can be divided in two parts, 2 and 280080, that added together give a palindrome (280082).

The spelling of 2280080 in words is "two million, two hundred eighty thousand, eighty".

Divisors: 1 2 4 5 8 10 11 16 20 22 40 44 55 80 88 110 176 220 440 880 2591 5182 10364 12955 20728 25910 28501 41456 51820 57002 103640 114004 142505 207280 228008 285010 456016 570020 1140040 2280080