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80300280 = 23351674007
BaseRepresentation
bin1001100100101…
…00100011111000
312121002200021110
410302110203320
5131024102110
611545040320
71663353414
oct462244370
9177080243
1080300280
1141366875
1222a860a0
1313836c78
14a943d44
1570b2a20
hex4c948f8

80300280 has 64 divisors (see below), whose sum is σ = 242403840. Its totient is φ = 21279872.

The previous prime is 80300273. The next prime is 80300303. The reversal of 80300280 is 8200308.

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, 18037 + ... + 22043.

It is an arithmetic number, because the mean of its divisors is an integer number (3787560).

Almost surely, 280300280 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 80300280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121201920).

80300280 is an abundant number, since it is smaller than the sum of its proper divisors (162103560).

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

80300280 is a wasteful number, since it uses less digits than its factorization.

80300280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4188 (or 4184 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 80300280 is about 8961.0423500841. The cubic root of 80300280 is about 431.4253762652.

Adding to 80300280 its reverse (8200308), we get a palindrome (88500588).

The spelling of 80300280 in words is "eighty million, three hundred thousand, two hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 167 334 501 668 835 1002 1336 1670 2004 2505 3340 4007 4008 5010 6680 8014 10020 12021 16028 20035 20040 24042 32056 40070 48084 60105 80140 96168 120210 160280 240420 480840 669169 1338338 2007507 2676676 3345845 4015014 5353352 6691690 8030028 10037535 13383380 16060056 20075070 26766760 40150140 80300280