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80796240 = 243257172341
BaseRepresentation
bin1001101000011…
…01101001010000
312122000212121100
410310031221100
5131140434430
612003424400
72000520360
oct464155120
9178025540
1080796240
1141675458
1223085100
131397b935
14aa329a0
15715e960
hex4d0da50

80796240 has 480 divisors, whose sum is σ = 350977536. Its totient is φ = 16220160.

The previous prime is 80796179. The next prime is 80796241. The reversal of 80796240 is 4269708.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 80796195 and 80796204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80796241) 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 95 ways as a sum of consecutive naturals, for example, 1970620 + ... + 1970660.

Almost surely, 280796240 is an apocalyptic number.

80796240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80796240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175488768).

80796240 is an abundant number, since it is smaller than the sum of its proper divisors (270181296).

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

80796240 is a wasteful number, since it uses less digits than its factorization.

80796240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 80796240 is about 8988.6728720095. The cubic root of 80796240 is about 432.3117605550.

The spelling of 80796240 in words is "eighty million, seven hundred ninety-six thousand, two hundred forty".