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80109988 = 2273797549
BaseRepresentation
bin1001100011001…
…10000110100100
312120202000020121
410301212012210
5131002004423
611541011324
71661631550
oct461460644
9176660217
1080109988
1141246902
12229b3b44
131379b47a
14a8d4860
15707645d
hex4c661a4

80109988 has 24 divisors (see below), whose sum is σ = 160664000. Its totient is φ = 34237728.

The previous prime is 80109979. The next prime is 80110007. The reversal of 80109988 is 88990108.

It is a super-2 number, since 2×801099882 = 12835220354720288, which contains 22 as substring.

It is an unprimeable number.

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, 6838 + ... + 14386.

Almost surely, 280109988 is an apocalyptic number.

It is an amenable number.

80109988 is an abundant number, since it is smaller than the sum of its proper divisors (80554012).

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

80109988 is a wasteful number, since it uses less digits than its factorization.

80109988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7939 (or 7937 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 43.

The square root of 80109988 is about 8950.4183142465. The cubic root of 80109988 is about 431.0843158812.

The spelling of 80109988 in words is "eighty million, one hundred nine thousand, nine hundred eighty-eight".

Divisors: 1 2 4 7 14 28 379 758 1516 2653 5306 7549 10612 15098 30196 52843 105686 211372 2861071 5722142 11444284 20027497 40054994 80109988