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2080280 = 235131397
BaseRepresentation
bin111111011111000011000
310220200121102
413323320120
51013032110
6112330532
723452646
oct7737030
93820542
102080280
1111a0a44
12843a48
1357ab47
143c2196
152b15a5
hex1fbe18

2080280 has 32 divisors (see below), whose sum is σ = 4728240. Its totient is φ = 823680.

The previous prime is 2080277. The next prime is 2080289. The reversal of 2080280 is 820802.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2080289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5042 + ... + 5438.

22080280 is an apocalyptic number.

2080280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2080280 is an abundant number, since it is smaller than the sum of its proper divisors (2647960).

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

2080280 is a wasteful number, since it uses less digits than its factorization.

2080280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539 (or 535 counting only the distinct ones).

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

The square root of 2080280 is about 1442.3175794533. The cubic root of 2080280 is about 127.6558136087.

The spelling of 2080280 in words is "two million, eighty thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 131 262 397 524 655 794 1048 1310 1588 1985 2620 3176 3970 5240 7940 15880 52007 104014 208028 260035 416056 520070 1040140 2080280