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80069868 = 22322937591
BaseRepresentation
bin1001100010111…
…00010011101100
312120122222012200
410301130103230
5130444213433
611540101500
71661403564
oct461342354
9176588180
1080069868
114121974a
1222994890
1313786128
14a8c3da4
157069613
hex4c5c4ec

80069868 has 36 divisors (see below), whose sum is σ = 203116368. Its totient is φ = 26595360.

The previous prime is 80069867. The next prime is 80069917. The reversal of 80069868 is 86896008.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×800698682 = 12822367523074848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80069861) 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 11 ways as a sum of consecutive naturals, for example, 6753 + ... + 14343.

Almost surely, 280069868 is an apocalyptic number.

It is an amenable number.

80069868 is an abundant number, since it is smaller than the sum of its proper divisors (123046500).

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

80069868 is a wasteful number, since it uses less digits than its factorization.

80069868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7894 (or 7889 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 80069868 is about 8948.1767975381. The cubic root of 80069868 is about 431.0123398760.

The spelling of 80069868 in words is "eighty million, sixty-nine thousand, eight hundred sixty-eight".

Divisors: 1 2 3 4 6 9 12 18 36 293 586 879 1172 1758 2637 3516 5274 7591 10548 15182 22773 30364 45546 68319 91092 136638 273276 2224163 4448326 6672489 8896652 13344978 20017467 26689956 40034934 80069868