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80028826 = 21711931973
BaseRepresentation
bin1001100010100…
…10010010011010
312120120212220121
410301102102122
5130441410301
611535143454
71661143123
oct461222232
9176525817
1080028826
11411a0929
1222974b8a
1313770547
14a8b304a
15705c3a1
hex4c5249a

80028826 has 16 divisors (see below), whose sum is σ = 127275624. Its totient is φ = 37609984.

The previous prime is 80028821. The next prime is 80028829. The reversal of 80028826 is 62882008.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 68475625 + 11553201 = 8275^2 + 3399^2 .

It is a super-2 number, since 2×800288262 = 12809225981876552, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 80028791 and 80028800.

It is not an unprimeable number, because it can be changed into a prime (80028821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39576 + ... + 41548.

Almost surely, 280028826 is an apocalyptic number.

80028826 is a deficient number, since it is larger than the sum of its proper divisors (47246798).

80028826 is a wasteful number, since it uses less digits than its factorization.

80028826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3185.

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 80028826 is about 8945.8831872543. The cubic root of 80028826 is about 430.9386849036.

The spelling of 80028826 in words is "eighty million, twenty-eight thousand, eight hundred twenty-six".

Divisors: 1 2 17 34 1193 1973 2386 3946 20281 33541 40562 67082 2353789 4707578 40014413 80028826