80072445 has 8 divisors (see below), whose sum is σ = 128115936. Its totient is φ = 42705296.

The previous prime is 80072429. The next prime is 80072449. The reversal of 80072445 is 54427008.

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

It is a cyclic number.

It is not a de Polignac number, because 80072445 - 2⁴ = 80072429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80072449) 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, 2669067 + ... + 2669096.

It is an arithmetic number, because the mean of its divisors is an integer number (16014492).

Almost surely, 2^80072445 is an apocalyptic number.

It is an amenable number.

80072445 is a deficient number, since it is larger than the sum of its proper divisors (48043491).

80072445 is a wasteful number, since it uses less digits than its factorization.

80072445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5338171.

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 80072445 is about 8948.3207921934. The cubic root of 80072445 is about 431.0169637830.

The spelling of 80072445 in words is "eighty million, seventy-two thousand, four hundred forty-five".