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80803060 = 22513310781
BaseRepresentation
bin1001101000011…
…11010011110100
312122001012221221
410310033103310
5131141144220
612003520124
72000546302
oct464172364
9178035857
1080803060
114167a598
1223089044
1313981a80
14aa35272
1571619aa
hex4d0f4f4

80803060 has 24 divisors (see below), whose sum is σ = 182739816. Its totient is φ = 29834880.

The previous prime is 80803031. The next prime is 80803069. The reversal of 80803060 is 6030808.

It can be written as a sum of positive squares in 4 ways, for example, as 9771876 + 71031184 = 3126^2 + 8428^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80803069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155131 + ... + 155650.

It is an arithmetic number, because the mean of its divisors is an integer number (7614159).

Almost surely, 280803060 is an apocalyptic number.

It is an amenable number.

80803060 is an abundant number, since it is smaller than the sum of its proper divisors (101936756).

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

80803060 is a wasteful number, since it uses less digits than its factorization.

80803060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310803 (or 310801 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 80803060 is about 8989.0522303522. The cubic root of 80803060 is about 432.3239240057.

Adding to 80803060 its reverse (6030808), we get a palindrome (86833868).

The spelling of 80803060 in words is "eighty million, eight hundred three thousand, sixty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 310781 621562 1243124 1553905 3107810 4040153 6215620 8080306 16160612 20200765 40401530 80803060