80728701 has 8 divisors (see below), whose sum is σ = 113303520. Its totient is φ = 50986512.

The previous prime is 80728649. The next prime is 80728717. The reversal of 80728701 is 10782708.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80728701 - 2¹⁸ = 80466557 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80728741) by changing a digit.

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, 708090 + ... + 708203.

It is an arithmetic number, because the mean of its divisors is an integer number (14162940).

Almost surely, 2^80728701 is an apocalyptic number.

It is an amenable number.

80728701 is a deficient number, since it is larger than the sum of its proper divisors (32574819).

80728701 is a wasteful number, since it uses less digits than its factorization.

80728701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416315.

The product of its (nonzero) digits is 6272, while the sum is 33.

The square root of 80728701 is about 8984.9151915864. The cubic root of 80728701 is about 432.1912679699.

The spelling of 80728701 in words is "eighty million, seven hundred twenty-eight thousand, seven hundred one".