80729116 has 24 divisors (see below), whose sum is σ = 156259040. Its totient is φ = 36251712.

The previous prime is 80729111. The next prime is 80729147. The reversal of 80729116 is 61192708.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80729111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19056 + ... + 22903.

Almost surely, 2^80729116 is an apocalyptic number.

It is an amenable number.

80729116 is a deficient number, since it is larger than the sum of its proper divisors (75529924).

80729116 is a wasteful number, since it uses less digits than its factorization.

80729116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42013 (or 42011 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 80729116 is about 8984.9382858203. The cubic root of 80729116 is about 432.1920085536.

The spelling of 80729116 in words is "eighty million, seven hundred twenty-nine thousand, one hundred sixteen".