80205726 has 16 divisors (see below), whose sum is σ = 168854400. Its totient is φ = 25328088.

The previous prime is 80205679. The next prime is 80205731. The reversal of 80205726 is 62750208.

It is a junction number, because it is equal to n+sod(n) for n = 80205693 and 80205702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351666 + ... + 351893.

It is an arithmetic number, because the mean of its divisors is an integer number (10553400).

Almost surely, 2^80205726 is an apocalyptic number.

80205726 is an abundant number, since it is smaller than the sum of its proper divisors (88648674).

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

80205726 is a wasteful number, since it uses less digits than its factorization.

80205726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703583.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 80205726 is about 8955.7649589524. The cubic root of 80205726 is about 431.2559745444.

The spelling of 80205726 in words is "eighty million, two hundred five thousand, seven hundred twenty-six".